Pest Control Services in Dasman – Our Steps in Eradicating Small Cockroaches

In light of the spread of household pests in various areas of Kuwait, small cockroaches known as "Zahyiwi" have emerged as one of the most disturbing pests inside homes, particularly in the residential and vibrant area of Dasman. The presence of these insects is not only a source of disgust, but it also extends to being carriers of diseases, spoiling food, and causing panic among residents, especially in households with children or the sick.

Since eliminating Zahyiwi requires a precise plan and advanced tools, relying on pest control services in Dasman from a specialized company like Al Shahin Company becomes the ideal solution. The company offers comprehensive solutions based on safe pesticides, professional-grade gels, and accurate injections, each method selected based on the type and location of the infestation. In this article, we will explore all the details related to the techniques, tools, and pesticides, and reveal the secret behind the success of our company in Dasman specifically, and Kuwait in general.

What is Zahyiwi and Why Does It Pose a Threat Inside Homes?

Zahyiwi is a type of small cockroach that spreads quickly in the household environment. It is one of the most difficult pests to eliminate due to its high ability to hide and breed in tight and moist places, such as under sinks, behind refrigerators, and within wooden partitions.

The danger of Zahyiwi lies not only in its disturbing appearance but also in its role as a carrier of bacteria and viruses. It crawls over trash and bathrooms before wandering onto food utensils. Due to its small size, it is sometimes difficult to spot, which makes its health and psychological impact much greater than other pests.

This is where the importance of relying on pest control services in Dasman, provided effectively by Al Shahin Company, comes into play, especially in old neighborhoods or poorly ventilated apartments.

Learn more about: How to Get Rid of Zahyiwi in Kuwait City – Tried and Effective Methods

Why is Zahyiwi Considered One of the Most Dangerous Household Pests?

Rapid Reproduction: Zahyiwi lays its eggs in capsules containing dozens of cockroaches, and a single female can produce hundreds of them within weeks.
Ability to Hide: It sneaks into wood joints, behind appliances, and in sewage openings, making it difficult to detect.
Transmission of Germs: Due to its contact with garbage, Zahyiwi picks up various types of bacteria, then moves onto kitchen utensils, food, and sensitive surfaces.
Causes Psychological Stress: Especially for women, children, and the elderly, as it creates a constant feeling of uncleanliness or a loss of control over the home environment.

Hence, the need for professional and calculated methods to eliminate Zahyiwi in Dasman is essential, particularly in old homes or apartments with poor ventilation, where the environment is ideal for Zahyiwi to breed.

Why Do Small Cockroaches Spread So Aggressively in Dasman?

Several factors in the Dasman area of Kuwait make it a fertile ground for Zahyiwi infestation:

Proximity to the Sea: The humidity caused by being near the sea seeps into walls and floors.
Old Building Structures: Some buildings have hollow walls and gaps that provide ideal hiding places.
Shared Sewer Systems: The shared sewage systems between residential buildings make it easier for Zahyiwi to travel from one unit to another.
Small Housing Units: Poor cleaning and maintenance of pipes in smaller residential units make it easier for Zahyiwi to spread within the same building.

Therefore, pest control services in Dasman offered by Al Shahin Company are not just a preventive option but an essential necessity to protect homes from widespread infestation.

Learn More About: Effective and Tested Solutions for Small Cockroach Control

Can Zahyiwi Be Eliminated with Household Methods?

Many residents in Dasman attempt to tackle Zahyiwi using common household methods, such as:

Cockroach powder
Apple cider vinegar and lemon
Spraying white vinegar or bleach

While these methods may yield limited results initially, they do not address the root of the problem. They fail to reach the nests or eliminate the eggs hidden in hard-to-see areas.

Pest control services in Dasman that rely on professional-grade gels, injections, or sprays are the most effective solution. Therefore, we always recommend working with the best pest control company in Dasman to ensure peace of mind and a clean, safe environment.

When Should a Specialized Company Be the Only Solution?

There are certain signs that indicate the need to contact a professional pest control company:

Frequent sightings of small cockroaches despite constant cleaning
Appearance of cockroaches during the day (which indicates a higher infestation)
Presence of cockroach eggs or foul odors in drawers
Spread of the infestation from one apartment to another in the same building
Ineffective household remedies

At this stage, delaying action is not an option. Zahyiwi doesn't stop reproducing, and any delay leads to an increase in their numbers. This is where Al Shahin Company plays a crucial role, offering effective solutions for small cockroaches in Dasman through a tailored plan for each individual home.

Pest Control Methods Used by Al Shahin Company

Our company uses a variety of methods depending on the nature of the location and the severity of the infestation:

Surface or fogging spray for large, open areas
Professional-grade gels applied in hard-to-reach spots
Insecticide injections into cracks and joints
Biological pesticides for sensitive areas
Regular follow-up visits to ensure the pests don't return

The best method is chosen after a thorough inspection by our team, ensuring the most appropriate solution for the space.

Learn More About: Al Shahin Company – The Best Pest Control with the Highest Quality in All Areas of Kuwait

Why Do We Rely on Multiple Methods in One Visit?

Zahyiwi is a complex pest, and in many cases, a single method alone may not be sufficient. That's why the best pest control company in Dasman combines multiple methods, including:

Gels: Suitable for kitchens and sensitive environments.
Spraying: Ideal for open areas and fast-spreading infestations.
Injections: Perfect for hidden or chronic nests.

With repeated services and follow-ups, we ensure the complete eradication of Zahyiwi from the roots, not just a reduction in its appearance.

When Do We Determine the Most Suitable Method for Pest Control?

Our team doesn’t work randomly; we follow clear steps before choosing the appropriate method:

On-site inspection to identify the source of the infestation.
Analysis of the type of infestation (light, medium, severe).
Assessment of how widespread the insects are inside the living unit.
Choosing the most suitable method or combination of methods based on these factors.

Therefore, there is no one-size-fits-all solution; instead, we use a customized approach for each case, ensuring effective pest control in Dasman.

Can One Method Be Enough?

In some cases, yes. If the infestation is light or recent, we may only need to use gel or a simple localized spray. However, in most cases, especially in Dasman, which is filled with older apartments, we need to use multiple methods, along with follow-up visits after a few days to ensure the pests are completely gone.

This is where the difference between temporary solutions and comprehensive, root-level solutions comes in, which is what Al Shahin Company provides as the best pest control service for Zahyiwi in Dasman, as affirmed by hundreds of customers.

Types of Pesticides Used in Kuwait for Zahyiwi Control

When it comes to small cockroaches or Zahyiwi, the pesticide used is just as important as the method of application. Many failures in eradicating Zahyiwi stem from using unsuitable, weak, or unlicensed pesticides.

At Al Shahin Company, we ensure the use of licensed pesticides approved by the Kuwaiti Ministry of Health, which are safe, effective, and field-tested in various residential environments.

What Features Should Zahyiwi Pesticides Have?

Long-lasting effectiveness: It kills cockroaches instantly and prevents their reproduction for an extended period.
Low toxicity to humans: Especially important for homes with children, the elderly, or patients.
Minimal or no odor: To avoid discomfort during spraying inside homes.
Safe for indoor use: Without requiring evacuation of the premises.
Designed specifically for Zahyiwi: Not just for general flying or crawling insects.

These properties are present in the pesticides used by Al Shahin Company as part of our pest control packages for Zahyiwi in Dasman.

Popular Approved Pesticides Used in Kuwait

We rely on a variety of globally recognized pesticides that have proven effective in controlling Zahyiwi, including:

Demand CS (Lambdacyhalothrin)

A long-lasting pesticide with microcapsule technology.
Kills Zahyiwi upon contact with treated surfaces.
Not easily affected by cleaning or heat, making it ideal for Kuwait's climate.

Cypermethrin:

One of the most well-known pesticides in the Kuwaiti market.
Used for fogging and liquid spraying.
Effective for small cockroaches, ants, and bedbugs.

Delta Guard (Deltamethrin):

Safe for use in homes and restaurants.
Provides weeks of protection.
Doesn’t cause allergies or leave residues on furniture or surfaces.

Maxforce FC Insecticide

A product by Bayer.
Contains fipronil, specifically effective for Zahyiwi.
Also used as a gel in certain formulations.

Phantom Aerosol

A precise, targeted aerosol spray.
Ideal for small, enclosed spaces like drawers and cabinets.
Allows the insect to come into contact with the pesticide without escaping.

Demand CS – Long-Lasting Power Against Zahyiwi

Demand CS is one of the most powerful pesticides used for small cockroach control and is relied upon by Al Shahin Company in our professional spraying plans for Dasman. It contains Lambdacyhalothrin with microcapsule technology, which ensures that the active ingredient is released gradually on surfaces, providing lasting effects for several days after application.

Demand CS is virtually odorless, safe for residential use, and leaves no marks on surfaces, making it ideal for wall and floor spraying, especially when dealing with medium to severe Zahyiwi infestations in apartments in the Dasman area.

Do Pesticide Types Vary Depending on the Severity of the Infestation?

Absolutely. When providing pest control services for Zahyiwi in Dasman, we first assess the nature of the infestation and then choose the appropriate pesticide based on the situation:

Light infestation: We use gel or a mild localized spray.
Medium infestation: We opt for Cypermethrin or Demand CS, especially for side spraying.
Severe infestation: We combine multiple pesticides, including Delta Guard or Maxforce, in a multi-method plan.

All of these formulations are used under strict guidelines and the supervision of Al Shahin's experts to ensure the safety of the residents and the premises.

Are the Pesticides Used Safe for Residents and Pets?

One of the key considerations when providing Zahyiwi pest control services in Dasman is ensuring that the pesticides used are:

Non-toxic at the field concentrations, meaning they do not cause direct harm to humans.
Odorless or leave no strong unpleasant smell after spraying.
Non-irritating to the skin or respiratory system.
Safe for residents to return quickly after the service, especially when using light surface sprays or gel.

For this reason, we only use pesticides that have been lab-tested and field-tested in Kuwait, and are widely used with no reported health issues. We always recommend our clients to rely on the best pest control company for Zahyiwi in Dasman to ensure results without exposing themselves or their families to any risks.

How Do We Safely Store and Use Pesticides Inside Dasman Homes?

At Al Shahin, we don’t just purchase pesticides; we commit to storing and handling them according to safety standards:

Store them in well-ventilated areas, away from direct sunlight.
Label the containers clearly with warning signs.
Do not mix pesticides manually inside the client's home.
Use specialized and sealed spraying equipment.

Our team also educates clients on a series of post-spraying tips to ensure their safety and the safety of their families after the service.

Zahyiwi Pest Control Gel – Formulation and Use

In recent years, pest control gel has become the preferred choice for many pest control companies, especially when dealing with small cockroaches in sensitive residential environments. It is one of the safest and most effective methods in Al Shahin’s pest control services in Dasman, particularly in apartments where spraying may not be suitable due to the presence of children, patients, or uncovered food items.

What is Zahyiwi Pest Control Gel and How Does It Work?

Zahyiwi pest control gel is a sticky substance applied in specific points in the kitchen, bathroom, or areas where the pest has been spotted. The gel contains:

A food attractant that easily draws the Zahyiwi cockroaches.
A precise dose of toxic substance that causes the cockroach to die shortly after consumption.

The effectiveness of the gel depends not only on its formulation but also on the application method and placement, where Al Shahin's expertise comes into play in identifying the right spots for gel distribution.

Once the Zahyiwi consumes the gel, it returns to its nest, spreading the poison to the rest of the colony, leading to the complete eradication of the infestation within a few days.

What Are the Most Common Gel Types Used in Kuwait?

As part of Al Shahin’s Zahyiwi pest control services in Dasman, we use several globally recognized and licensed gel types that are proven effective:

Advion Cockroach Gel

Contains Indoxacarb, effective and safe.
Acts quickly on Zahyiwi.
Safe for humans and pets.

Combat Roach Gel

An economical yet effective formulation.
Works efficiently in enclosed spaces.
Needs to be replaced every 10-14 days for continued effectiveness.

Maxforce FC Gel

A product by Bayer.
Highly effective against multiple types of small cockroaches.
Used specifically in cracks and unseen corners.

We do not use gel randomly. We perform a thorough assessment of the infestation type and choose the most suitable gel for the job to provide effective Zahyiwi control in Dasman.

Why is Gel Preferred in Some Environments Over Spraying?

While spraying is effective in many situations, gel offers several advantages:

Completely safe for use near kitchen tools.
No need to evacuate the area or ventilate.
No odor or residue.
Long-lasting without the need for daily reapplications.

For these reasons, many clients looking for the best Zahyiwi pest control company in Dasman prefer gel over spraying, especially in furnished apartments or those with children.

How Do We Use Gel Correctly to Ensure the Best Results?

At Al Shahin, we follow a detailed plan when applying the gel:

Identify the exact areas of infestation after a thorough inspection.
Apply small gel droplets in potential areas of movement.
Avoid cleaning the area immediately after application, as the scent is what attracts Zahyiwi.
Follow up after 3 days to assess the response and reapply gel if necessary.

Thus, the results from the gel are not random but depend on precise execution, which is what we guarantee in our Zahyiwi pest control services in Dasman.

Is Gel Alone Enough to Eradicate Zahyiwi?

It depends on the severity of the infestation. For light to medium infestations, gel can be sufficient to completely eliminate Zahyiwi within a week. However, in severe or recurring cases, we typically recommend combining gel with other methods such as:

Injecting inside walls.
Localized spraying.
Sticky traps.

This integration is what allows Al Shahin to provide high-quality Zahyiwi pest control services in Dasman, with tangible results from the first visit.

Advion Cockroach Gel – The Strongest Choice for Residential Environments

Advion Cockroach Gel is one of the most popular gels used to control Zahyiwi inside homes and kitchens in Kuwait, especially in Dasman. This gel contains Indoxacarb, which targets the nervous system of small cockroaches in a slow, controlled manner, allowing the insect to return to its nest before it dies, thus transmitting the poison to the rest of the colony.

What makes this gel stand out is that it is odorless, completely safe for use in sensitive areas like drawers and food cabinets, and requires no ventilation or cleaning after application. For these reasons, we rely on it as a key component in our Zahyiwi pest control services in Dasman, especially for families looking for an effective yet safe solution.

Insect Injection – A Precise Technique to Eliminate Hidden Nests

In the world of pest control, injection technology is one of the most advanced and precise methods, especially when dealing with small cockroaches like Zahyiwi, which hide in deep cracks and internal joints. This is why injections are often used in complex cases within Zahyiwi pest control services in Dasman offered by Al Shahin Company. This technique has proven to be highly effective in eliminating chronic and deep infestations that traditional pest control methods cannot reach.

When Do We Use Injections Instead of Spraying or Gel?

Not every Zahyiwi infestation requires injections, but there are clear signs that lead us to choose this method as a primary solution:

Seeing cockroaches emerging from behind tiles or joints, indicating that the nest is inside the wall itself.
Failure of spraying or gel to eliminate the infestation after several attempts.
Repeated sightings of Zahyiwi in the same spot even after cleaning and spraying.
Presence of cracks or cavities in walls and floors, which provide an ideal environment for Zahyiwi breeding.

In these cases, injections are the most effective method in Zahyiwi control in Dasman.

How Are Injections Applied Inside Walls or Floors?

The injection process requires high precision and specialized equipment. At Al Shahin, we follow these steps:

Identifying potential nesting sites based on the insect's behavior and traces on surfaces.
Using precise injection guns to pump the pesticide into very small cracks and gaps.
Controlling the amount of pesticide to ensure it reaches the depth required without damaging any part of the walls or floors.
Waiting several hours without cleaning or ventilating the area to allow the pesticide to work.

We often combine this technique with spraying or gel in the same visit, providing a comprehensive solution for Zahyiwi control in Dasman.

What Pesticides Are Used in Injections in Kuwait?

As part of our plans at Al Shahin, we use specialized pesticides for injections that have a strong concentration yet are safe for residents. These include:

Fipronil Gel Injection

A toxic gel injected into cracks targeting the Zahyiwi's nervous system.

Hydramethylnon Paste

A paste pumped deep into walls or under floors, affecting the pest from the inside.

Bait-based Injections

These contain attractants mixed with slow-acting toxins, helping to eliminate the entire colony.

These materials are approved for use in Kuwait, and we apply them carefully and professionally in residential areas as part of effective Zahyiwi control solutions in Dasman.

Is Injection Safe in Residential Homes?

Many clients ask: "Does the injection damage the walls? Does it smell? Do I need to leave the house after the service?"

The answer is simple: injections are completely safe when performed by a specialized team like ours at Al Shahin.

No damage to décor or tiles.
No unpleasant smell or visible residue left on walls.
No need to leave the home, and you can stay inside during the procedure.
Applied in very small amounts, but extremely effective.

Therefore, we recommend customers experiencing repeated or hidden infestations to rely on injections as part of their Zahyiwi pest control services in Dasman to ensure effective nest eradication.

What Is the Difference Between Spraying, Gel, and Injection? When Do We Choose Each Method?

The difference between Zahyiwi control methods goes beyond their form or application; it also extends to effectiveness, safety, duration of impact, and the speed of results. That's why Al Shahin Company selects the most suitable method based on the specific case, and we clearly explain the differences to our clients. Here's a comparison of spraying, gel, and injections:

Element	Spraying	Gel	Injection
Method of Use	Direct spraying on surfaces	Small points in corners	Pesticide pumped into cracks/walls
Coverage Area	Covers large areas	Localized and limited	Precise, targets nests
Speed of Effect	Instant	Medium (2–5 days)	Relatively fast if used with other methods
Safety in the Home	Requires ventilation or temporary evacuation	Completely safe, no need to leave	Safe with minimal amounts used
Duration of Effect	1 week to 10 days	Up to 3 weeks	Can last for weeks if done properly

When Do We Choose Each Method for Zahyiwi Control in Dasman?

We don't choose a method randomly; it's based on an evaluation of the situation at the client’s site in Dasman. Here’s when we prefer each method:

Spraying:

When the infestation is clear and visible, and there are many Zahyiwi.
When the area is large or open (e.g., a storeroom, rooftop, or stairs).
When there are no sensitivities like children or uncovered food during service.

Gel:

When the infestation is in the early stages.
When we want a safe solution in kitchens or rooms with children.
When the client prefers a solution that doesn't require leaving the home.

Injection:

When cockroaches are hard to spot, but traces of them are found.
When other methods fail due to nests inside walls.
When the infestation recurs in the same area despite using spraying or gel.

Can Methods Be Combined? Is It Necessary?

Yes, and it's often done. At Al Shahin, we combine multiple methods in the same visit to achieve effective solutions for small cockroaches in Dasman. For example:

We use spraying to treat visible areas.
Then apply gel in drawers and food cabinets.
If there are cracks, we perform injection into the joints.

This combination yields the best results and minimizes the chances of Zahyiwi returning soon.

Read About: Rabiya Cockroach Control Company: Eliminating Pests Instantly

When Do We Determine That Zahyiwi Has Been Completely Eradicated?

After implementing any of the Zahyiwi pest control services in Dasman, clients often ask, “Has the pest really disappeared? Is there a chance it will come back?” The answer is not random; it depends on clear indicators and field criteria that Al Shahin relies on when assessing the success of the service and the stability of the results. Despite its small size, Zahyiwi doesn’t disappear easily unless targeted accurately, so confirming its eradication requires monitoring specific signs over several days to two weeks after the service.

Indicators of Complete Zahyiwi Eradication:

✅ First: No Cockroaches Appear After the Service
The clearest sign of successful pest control is:

Not seeing any small cockroaches or their remains 3–5 days after the service.
Absence of nocturnal cockroaches, which typically appear after lights are turned off.
No droppings or new eggs found in corners or under sinks.

At this point, Al Shahin can confidently confirm that the pest control plan has achieved its goal, and we inform the client that Zahyiwi has been eradicated.

✅ Second: Stability After Two Weeks
Even if Zahyiwi disappears after a few days, we usually wait 10 to 14 days to observe the actual results. During this period:

We keep adhesive traps to monitor any new activity.
We ask the client to report any sudden sightings of the insect.
We conduct a follow-up visit if needed, which is included in our Zahyiwi pest control services in Dasman.

If no insect activity is recorded during this phase, the service has been 100% successful in eliminating the colony.

✅ Third: Absence of Odors from Zahyiwi Nests
Zahyiwi, with its density and number of colonies, leaves a distinct and unpleasant odor, especially in kitchens. Signs of success include:

The disappearance of the strong smell from drawers and under sinks.
No visible traces of shed insect skins or eggs.
Improved air quality inside the space compared to before pest control.

These environmental indicators suggest that the infestation has completely vanished and that the methods used by Al Shahin, the best Zahyiwi pest control company in Dasman, were effective in targeting the pest’s nests accurately.

✅ Fourth: No Return of Zahyiwi Within the First Month
Zahyiwi is known for its rapid reproduction, and if its eggs aren’t completely eradicated, it may return within weeks. Therefore, the absence of any new sightings after 30 days is a strong indicator of complete success.

This is why we recommend that our clients monitor the area for a month. In some cases, we offer free follow-up visits as part of Al Shahin's services, and we provide a list of post-spraying tips to ensure the pest doesn’t return.

Post-Spraying Tips in Dasman – What Should You Do to Ensure Long-Term Results?

After performing any of our services at Al Shahin, we always provide clients with simple and easy-to-follow instructions to ensure the continued effectiveness of the products used and prevent the possibility of Zahyiwi returning. Since this pest can reappear if the surrounding environment is not properly managed, these tips are an essential part of our Zahyiwi pest control services in Dasman and are just as important as spraying, gel, or injections. The behavior of residents after the pest control service can either reinforce or undo the results.

Do not wash the surfaces that were sprayed immediately, especially in corners, under sinks, and around tiles.

It's best to wipe visible areas only and leave the spray to dry and do its job.

If gel was used, avoid touching or cleaning the gel spots because they are designed to attract the pest in the following days.
Zahyiwi seeks food and moisture, so you should:

Dry the sink after each use.
Empty trash bins daily.
Avoid leaving food scraps on surfaces or in uncovered containers.

These measures help prevent surviving pests or any new pests from entering the environment.

Even with injections inside walls, some gaps may still need to be sealed:

Use silicone or white cement to seal gaps around pipes.
Close any unused openings in bathrooms or kitchens.
Review floor corners and under cabinets, as these are ideal environments for Zahyiwi to return.

Prevention is a key part of the post-spraying tips in Dasman to ensure long-term protection.

✅ Avoid Using Pesticides on Your Own
Many clients, after seeing excellent results from our service, decide to spray on their own at the first sign of Zahyiwi, which is a common mistake:

Commercial products sometimes have the opposite effect, causing Zahyiwi to hide and breed.
Some pesticides may neutralize the effect of gel or injections already applied.
It’s better to contact Al Shahin’s team if you notice unusual activity.

Learn More About: Pest Control Technicians in Kuwait Across All Areas

Frequently Asked Questions About Zahyiwi Pest Control Services in Dasman

What is the Best Way to Completely Eliminate Zahyiwi in Apartments in Dasman?

The best method is to use a combined plan that includes spraying, gel, and injections. Each of these methods targets a different weakness of the pest. At Al Shahin, we rely on combining these techniques to provide effective solutions for small cockroaches in Dasman, ensuring guaranteed results from the first visit.

Can Zahyiwi Be Eliminated Using Gel Alone?

Yes, in cases of light to moderate infestations, gel can be sufficient. However, it must be applied professionally in precise locations. For larger infestations, we recommend combining gel with injections or spraying as part of Zahyiwi pest control services in Dasman provided by our company.

How Often Should Zahyiwi Be Sprayed Per Year?

We recommend repeating the service at least twice a year or whenever you notice any pest activity, especially in humid areas. At Al Shahin, we provide scheduled follow-up services to maintain complete protection, positioning ourselves as the best Zahyiwi pest control company in Dasman.

Do I Need to Leave the House After Spraying or Injections?

Not always. In our services, we use safe pesticides, but in the case of heavy spraying, we may recommend leaving the home for a few hours. With gel or injections, there is no need to leave, as these are localized and completely safe, especially when applied professionally by Al Shahin.

Do Cockroaches Return After Pest Control?

If the post-spraying tips in Dasman are not followed, the pests may return from neglected areas or nearby apartments. Therefore, we at Al Shahin ensure to monitor the situation and offer recommendations to guarantee the permanent eradication of Zahyiwi.

In Conclusion, dealing with Zahyiwi, those small, troublesome cockroaches, requires precise knowledge, effective tools, and real field experience. Simply spraying a pesticide or placing gel here and there is not enough; it requires a comprehensive plan that integrates different methods and is implemented thoroughly in every corner of the home.

From the details shared in this guide, it’s clear that Zahyiwi pest control services in Dasman offered by Al Shahin are based on professional systems, starting with diagnosis and ending with follow-up. Our use of combined methods like spraying, gel, and injections, and knowing exactly when and why to apply each method, has allowed us to exceed expectations, especially in difficult cases, particularly in older residential areas or enclosed spaces where Zahyiwi spreads easily.