Knowledgebase
Cat-safe management of clothes moth infestation #923863
Asked January 22, 2026, 12:46 PM EST
Hi there! I have a clothes moth infestation that I am currently trying to manage with hot temp laundering/freezing items, moth traps, parasitic wasps, steam cleaning fabrics with frass/evidence of larvae damage, vacuuming- but those fkrs are much more reduced but still haunting me (catching 1 on traps every 2 weeks instead of ~5-7, which in itself could be due to the colder temps)
I also have cats at home. I would love to use permethrin which I believe is cat-safe under 5% when dry, but I would prefer to not risk it. I have several questions I was hoping you can help me with:
-I have seen some forums with museum curators suggesting cedar oil spray (specifically Cedarcide with sprays/fogging equipment that have 4.6-10% cedar oil); the company claims that it can kill all life stages on contact. I cannot find other third party/research evidence on brief online searches- is this true or just marketing? I suspect it would also have minimal residual effect in days after application unlike permethrin?
-there are so many different claims regarding how long an item should be frozen for variable temperatures (I have seen as short as 12h-24h at 0 deg Celsius). Since its currently winter in Pittsburgh where I am, I am trying to figure out if I can just leave clothing in my car/outside. can you guide me on what the minimum temp is and how long items need to be frozen for to kill the eggs?
Thank you so much for your time in advance, there is so much conflicting evidence online from supposed experts and I am having some difficulty figuring out what’s an effective and efficient method to use, and I am hoping to be able to nip this in the bud before it gets warm and the buggers start to reproduce more quickly again.
Losing my mind,
Audrey
Allegheny County Pennsylvania
Expert Response
All sources I see indicate that this is an ongoing battle for control of your clothing. Constant cleaning and vacuuming of all woolen and other hair based materials is needed to keep them from growing in numbers. You may want to try cedar wood blocks made to hang in the closet or packing your woolens in a cedar chest to keep the insects from chewing on your clothes. Sealing garment bags may also help. Most pet sprays for fleas contain permethrin so austere use on clothing should only be done if the label allows it. Some sprays are oil based so it may ruin your clothes. perimeter sprays in the closet area may help. For more info see:
https://extension.umd.edu/resource/clothes-moths/
Thank You, G.