FAQs: Carrying Out Fumigation & Using Moth Killer Kits

At MothPrevention we know that finding moths in your home can feel violating and even embarrassing. The damage that can result from leaving moths untreated can be expensive, leaving clothing, carpets, textiles and food in need of replacement.

Good news! Our MothPrevention Fumers and Moth Killer Kits are the premium grade solution to your moth problem. When used correctly they are safe to use and efficient products for removing the textile moths & food moths from your home.

Our products are designed to effectively stop the moth life cycle and defend your home against further damage. The following FAQs will help you to understand how to use our products to remove the textile moths or food moths from within your home - providing peace of mind for you and your family.

Our Moth KIller Kits and Fumers all arrive with a User Guide to take you through your treatment step-by-step. And we also provide FREE Mask & Gloves with your order.

Don’t get daunted and overwhelmed - Read our FAQs, purchase your product, and treat with our guidance to get rid of the moths in your home.

Before considering purchasing or using your Fumers or Moth Killer Kit treatment, we highly recommend reading FAQs: Health & Safety.


1. Will I receive a User Guide with my Fumer order?

Yes. We’ll supply you with a simple User Guide with your Fumer order.

2. Do I need to wear a mask or gloves when fumigating?

Yes you do. With any order for Fumers we provide you with a FREE chemical grade mask and gloves. Additional Mask & Gloves can be purchased here if you need them.

3. The room I want to fumigate can’t be closed off from the rest of the house! What can I do about that?

You can get creative with polythene dust sheets and tape really to isolate the area that you would like to treat. Otherwise you’ll need to use sufficient Fumers to treat the entire house and evacuate until complete.

4. Do I need to remove any electronic devices from the room before fumigating?

No. The smoke from Fumers will not damage electrical items, providing you have correctly calculated the number of Fumers required.

5. How many Fumers do I need for my room?

We recommend measuring the room (LxWxH) you intend to treat before purchasing one of our Killer kits. One Mini Fumer covers 30 Cubic Metres, One Midi Fumer Covers 125 Cubic Metres. More details can be found in our Fumer Guide.

6. Should I remove the clothing from my wardrobe before fumigating?

No! We recommend leaving clothing in wardrobes so that the smoke from your Fumers can permeate into your garments and kill any moths lurking within pockets, collars and seams. Fumer smoke will not leave any residue or odour behind.

7. Should I remove bedding and pillows from the room before fumigating?

No. We recommend leaving bedding in place so that the smoke from your Fumers can permeate to kill any moths lurking within. Fumer smoke will not leave any residue or odour behind.

8. Do I need to be concerned about neighbouring apartments & ventilation?

We cannot answer this as there are many different scenarios. If you live in an apartment we recommend speaking with your Landlord/Building Manager/Maintenance Person.

9. Will using a Fumer (Smoke Bomb) set off my smoke detector? And if so, what can I do about that?

A Fumer emits smoke and will therefore activate smoke alarms in the same space. The smoke detector in the room you are treating will need to be isolated before you fumigate. If you are not able to isolate a smoke detector you can attempt to seal it with Cling Film or a polythene bag. There is not a 100% guarantee with this method!

You should not attempt to fumigate a room if living in an apartment until you have spoken with your landlord for guidance/confirmation. Smoke detectors are often shared throughout the entire building and a false activation should obviously be avoided!

10. Can I fumigate in or near my kitchen?

Yes you can fumigate a kitchen or near a kitchen space. However, additional precautions will need to be taken:

  • Make sure there is no exposed food or water
  • Remove or cover any food preparation utensils
  • After treatment, wash food preparation surfaces with warm soapy water

11. Can I safely use a Fumer within my loft?

You can certainly use a Fumer in a loft. However precautions do need to be taken to ensure everything will be safe:

  • The wick of the Fumer can sometimes emit sparks and should therefore be placed in the centre of a heat/fire proof surface that is 30cm x 30cm
  • There should also be 30cm clearance all around the Fumer
  • Remember to wear your supplied protective KN95 Mask & Gloves
  • Be sure to have a clear escape route. Once the Fumer is lit you need to watch it for a few seconds while the wick burns down and you back out of the area. In a loft space this can be tricky, so please be sure to plan this out beforehand!

12. How long do the Fumers emit smoke for?

Once the wick is lit, they will burn and release their entire contents within about 15 - 30 seconds. However, you will need to leave the smoke to permeate/disperse around the room for a minimum of 2 hours.

To confirm: The amount of smoke emitted is never as much as you expect it to be! It will not fill the room with dense smoke.

13. Do I need to wash my clothing and bedding after a fumigation?

Fumers don’t leave any residue or odour, so as long as the room has been thoroughly ventilated according to our guides, it is safe. You will not need to wash clothing or bedding afterwards.

14. Does the Fumer smoke kill all stages of the moth life cycle?

Yes. It is proven that the Fumers will kill eggs, larvae and adult moths if they come into contact with the smoke. However, a fumer is a knockdown product and once the treatment has been completed there will be no persistent effect to kill any moths/larvae/eggs that evaded the fumigation. This is why fumigation is only stage one of our Moth Killer Kit process.

We highly recommend to follow up with our persistent sprays and powders to target any larvae and eggs that were not killed by your fumers, and to also kill any moths that may enter the room at a later date! Sprays and powders have a residual killing effect, lasting long after application to protect your home. Both of these products are available in our Killer Kits.

15. Is one fumigation enough? Will I need to repeat treat?

It is possible that a single fumigation will be enough when followed up with a Moth Killer Kit Treatment. However, if you would sooner only fumigate your room we recommend repeat treating up to 3 times with 5-7 day intervals.

The placement of moth traps will also provide you with reassurance that you have things under control if you select the above method.

Moth Killer Kits

16. Will I receive a User Guide with my Moth Killer Kit order?

Yes. We’ll supply a straight-forward User Guide with your Killer Kit order.

17. Do I need to wear a mask or gloves when using a Moth Killer Kit?

Yes you do. With any order for Moth Killer Kit we provide you with a FREE chemical grade mask and gloves. Additional Mask & Gloves can be purchased here if you need them.

18. How long will it take to carry out a Killer Kit treatment?

Timings will vary from one type of kit to another, different sizes of rooms, contents within a room, as well as the severity of your infestation which will be unique to you. Below are various factors with more details and approximations on timings:

Room preparation: The first step to tackling a moth problem is to make sure the room is prepared. This may involve decluttering, vacuuming, checking / washing / removal of clothing, emptying crockery from cupboards, checking / repacking / removing food from cupboards … the list goes on!

You might only take 1 hour to prepare a simple office space for a treatment, but if you have a serious infestation in a bedroom you could spend a day or more checking garments and cleaning storage spaces ready to receive your Moth Killer Kit treatment. Similarly, if you’re preparing a kitchen for a Killer Kit treatment you might spend half a day or more checking food, cleaning and moving crockery etc.

It’s important to note that even if you call in a pest controller, room preparation will still need to be carried out.

Killer Kit application process: Timings will vary depending on the size of your room and the type / size of Killer Kit being applied.

  • Fumers: Allow a minimum of 4 hours.
    If your Kit contains Fumers it will take longer than if without. Although a Fumer will only smoulder for less than a minute, a minimum of 2 hours are required to allow the smoke to permeate, and you will need to allow another 2 hours to ventilate the room after that.
  • Sprays: Allow a minimum of 3 hours for an average sized room.
    Sprays are quick to apply, but will need time to dry. This can take a minimum of 2 hours and is dependent on the weather and how warm your home is. Opening windows to allow air to circulate can speed-up this part of the process.
  • Powders: Allow a minimum of 3 hours for an average sized room.
    Powders are quick to apply. However, although the Insecto Powder within our Extreme Power Kit is to be removed after 2 hours the Desi-Dust Natural Powder within our Carpet Killer Kits may need to be left in place for up to 10 days before being vacuumed up. Helpful to know: Leaving the Natural Powder in place does not have to stop you from using the room if you do not have children or pets.

19. When is the best time of year to purchase/use one of your Killer Kits?

Moths are more active during the warmer months. However they can infest all year round in our homes as we like to keep our homes warm! We would recommend using a Killer Kit at any time of the year when you have a concern about moths in your home, or if you see signs of moth larvae or fresh damage to clothing or carpets.

20. Please tell me everything I need to know about using Fumers?

Please refer to the section above titled ‘Fumigation’ for all the answers you need.

21. Can I safely use moth killing sprays inside my wardrobe?

Yes you can! We recommend removing clothing from your wardrobe (or drawers) before you treat. When the spray has dried you can put your clothing back. Once our sprays have dried they will not transfer onto garments stored within the wardrobe (or drawers)!

22. Can I apply a moth killer spray directly onto clothing?

No! It is not recommended to use any of the spray products from our Killer Kits directly onto clothing. Instead, to protect your clothing we recommend washing any infested garments and/or deep freezing items for 72 hours to kill eggs or larvae.

23. Where should I use the powder supplied with my Killer Kit?

The Powder is ideal for use on severely damaged areas of carpet and other textiles to hit that area hard and suffocate the problem! It can also be applied under furniture and around room edges where moths prefer to lay their eggs.

24. Can I use powder on clothing?

No. Even our natural powder is intended for use only on carpets, rugs and other textiles.

25. Will vacuuming up the powder damage my vacuum cleaner?

As long as the powder is dry it should not be a problem to remove it with a vacuum cleaner. We recommend the following process for different types of vacuum cleaner:
Vacuum Cleaner with bag: We recommend emptying the bag while wearing your supplied mask & gloves to remove the risk of direct contact or inhalation. Seal the vacuum cleaner bag inside an additional waste bag before depositing in your general waste bin.
Bagless Vacuum Cleaner: While wearing your supplied mask & gloves carefully empty the vacuum cleaner into a waste bag. Seal the bag and deposit in your general waste bin.

26. After using the Killer Kit I still see flying moths! Did the treatment work?

The products within our Killer Kit are very effective at eliminating moths, larvae and eggs. As long as you have followed the User Guide to use the correct amount of product, the treatment will have been effective. You can sometimes see moths flying afterwards. They may have come from other rooms, from outside, or in some cases moths will actively hide away from a treatment. However, as long as you have your traps positioned they will catch lingering adult males, and help to prevent further eggs from being laid.

27. I still see some larvae after my Killer Kit treatment, why is this?

If an infestation is particularly severe you may need to carry out a follow up treatment to completely eliminate them. Unfortunately moths and larvae can be stubborn to remove and it can take time. You should have sufficient spray and powder (where applicable) within your Killer Kit to carry out additional application to targeted areas.

28. I need a bit more help before using my Killer Kit! What can I do?

If you still have some questions please call us on our Customer Helpline 01300 321 098 (Mon-Fri - 9am - 4pm) or use our Contact Us form.

Get Our Moth Killer Kit with Extreme Power

Carpet moth killer kit

Carpet Moth Killer Kit

Buy Now
delivery vehicle icon
Next Working Day on Orders Over £60
Standard Delivery Only £4.95
Find Out More