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Dermestid Beetles


Summary: Dermestid beetles can do great damage to woolens and furs and can be a costly pest to have around, but if you can invest some time and work, they can be effectively controlled.

Dermestid beetles are commonly known as carpet beetles, khapra beetles, leather or hide beetles, and larder beetles. The name "dermestid" comes from a Greek word for "skin." They have that name because they will eat all the soft tissue off of a skeleton, leaving it cleaner than most professional taxidermy chemicals.  Now if you happen to have a large collection of carcasses that you need to clean, I'd recommend that you grow a whole colony of carpet beetles and turn them loose in your workshop. However, if you're not a taxidermist or if your skeleton collection is already clean, you probably don't want a clan of beetles living in your living room.

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Dermestid beetles don't just eat flesh; they also destroy things made of wool, silk, fur, or feathers, as well as any other natural fiber. Curtains, upholstery, clothing and, you guessed it, carpet are all endangered by dermestid beetles.  How can you protect your home from these beetles? Well, you could start by replacing all your carpets with tile or hardwood floors. But, you're probably going to have a hard time installing tile furniture and hardwood curtains. Fortunately, there are other ways to rid your home of dermestid beetles.  It'll take some work and careful cleaning, but in most cases, you can rid your home of these pests.

The first thing to do is to make sure you've got the right bug. Catch a few of the critters and spend some time examining them closely. Adult dermestid beetles are small (they grow to less than half an inch long), dark and hairy.  The larvae are usually brown with lighter yellow stripes and, like the adults, they are also hairy. 

The second step to dealing with dermestid beetles is getting rid of whatever is attracting them.  As awful as it sounds, an infestation of these beetles usually means that there's a dead-something nearby that they're feeding on. Check your home thoroughly for dead mice, birds, neighbor kids and small animals. Empty nests from birds or wasps provide food for the beetles.

Accumulations of pet hair also attract dermestid beetles. Also, make sure you don't have any food (especially meat!) stored improperly.

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Dermestid larvae

Remove and clean up any carcasses you find, and properly seal and store any food that may be in the open. In many cases the beetles will simply leave if you're not providing anything for them to eat.

The third item on our dermestid beetle removal checklist is extermination. You can use a residual pesticide like Suspend SC or Tempo 1% Dust around the baseboards, tight places or crevices. Doorframes, window sills and other entry points to your home are also potential problem spots. Of course, you'll want to be sure to pick a safe pesticide if you have pets or small children in your home. Creating another carcass will only make things worse. You can use a spray to apply the insecticide to problem areas or you use a dust pesticide to treat your target zones. The two pesticides I've mentioned are designed for dermestid or carpet beetles.

The final step is to prevent a beetle sequel. If you've found the beetles or their larvae near clothing, wash it. Wash it in hot water or have it dry cleaned, if necessary. Just make sure you get all the bugs out of it. You can use naphthalene flakes, mothballs or PDB to help prevent the beetles from returning. The best part of prevention, of course, is to keep things clean. Vacuum pet hair, store food properly, keep any eye out for dead animals. In short, keep a clean home.

Now, there are places where the dermestid beetle cure goes beyond cleaning and spraying on your own. In cases like those, we would definitely recommend that you contact an exterminator and let a professional do battle with your beetles.





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Comments

cirelo
11 Oct 2011, 19:14
I think I have an infestation of some kind of dermestid beetle, but not attacking fibers (yet). They are all in my kitchen cabinets. I'm wondering what damage can they do to wood? I suspect that these guys came in on some grain or something since I buy most of my food in bulk, does that seem plausible? Are either of the chemicals you recommended safe for children, all my kids are small and like to do things like lick the floors so I need something safe.
Ask the Exterminator
12 Oct 2011, 16:03
I'm betting it's a pantry pest, rather than a fabric pest. You need to check everything in your pantry that has an expired use date. Flour beetles and the like can develop in unused foods even when boxes have never been opened.
kath
24 Dec 2011, 14:09
I found them in light fixtures and they are coming out of tub surround and house plants. I spray and keep a clean home. My husband has a dear head and stuffed mink. He is attached to them. Must get rid of these bugs. I also found them in a cork buliton board. They bother me.
Mary
11 Mar 2012, 15:31
I live in northern New York State - near the Canadian border. We are trying to get rid of larder beetles in our home. We did get rid of the food source.
However, tempo dust, etc cannot be sold iin NYS and we can't afford a pest control company. Any suggestions would be greatly appreciated.
Ask the Exterminator
13 Mar 2012, 16:18
Sanitation is the first step in controlling established larder beetle problems. Clean up and remove infested food sources and make uninfested sources inaccessible to larder beetles. Store dry pet food in a metal or heavy plastic container with a tight-fitting lid. Also keep stored fur and feather items in similar containers. Store cheese and dried meats in a refrigerator.

It is common for a larder beetle infestation to occur as the result of a cluster fly or face fly problem in homes or cabins. In late summer and fall, these flies seek shelter in buildings. Large numbers of these flies die in wall voids attracting larder beetles to that area the following year. Larder beetles can also feed on animal carcasses, such as a mice or squirrels, that become trapped inside buildings and die.

Holly
15 Mar 2012, 23:56
I concur with the folks who get blank stares from exterminators when mentioning carpet beetles. Most of them have never heard of them. One exterminator identified it immediately , followed with "they're a nusiance but harmless. you don't need treatment". The things were wandering all over my bassement where we ahve had flooding and where the cat litter boxes are. hte house is infiltrated because of ingorant exterminators who told me not to worry about it and to vacuum. They neglected to tell me to throw the bag out after every vac. We have a 4 story house 3 floors of w2w and mold. the condo association refuses to stop the water infiltrating from common area neglect and unit owners won't fire them .
Jen
19 Mar 2012, 07:31
can these things stain carpets? I've been trying find out what these bugs are and after finally finding a picture of them online, I'm kind of relieved. but I'm just wondering if these bugs give off an odor? at first I thought they were millipedes because of the smell.. at one point my clothes really stunk (and they were clean) do I'm guessing these bugs had gotten into my bins where I keep my clothes. there are also brown stains at the crevices of my walls which leads to my original question, can they stain carpets? like of they were to die or something? and how can I get rid of them? I am a very a tidy person I live alone an have no pets in my apartment. I am really paranoid.. pretty paranoid of any big in general though.
Samantha
14 Nov 2012, 22:11
What if i can't find the source (dead carcass possibly in wall cavity). How do I control the larvae from entering the house? Have fumigated but so far... No go. Assuming I have to live with them for a while, how long until they eventually disappear?
hope bracklow
14 Mar 2013, 22:20
I am currently doing some temp work for a dog food warehouse and the supervisor opened up a box and a bunch of these bugs where inside. they didnt do anything about the bugs but they continue to package the product and ship it out. i think thats kinda gross. is that common in the dog food industry in CA?
john ransome
04 Jun 2013, 17:33
I had a bed bug infestation about 10 months ago. I have been finding more and more of these beetles in the most heavily infested room.
is it possible:

1-they are eating dead bed bugs
2-could they eat the boxspring and mattress encasements?

thank you
Ask the Exterminator
05 Jun 2013, 13:32
It is possible that the dermestid beetles are feeding upon other dead insects. It is not possible that they are eating the box spring and/or mattress encasements.
Deb
15 Dec 2013, 21:18
Just found the larvae and casings all over my 2 teenage boys' ( messy) rooms. No beetles,yet.We have spent the day cleaning, vacuuming and doing laundry? What next? Vacuumed the mattresses and beds but they both have heavy wooden boxy beds. Will they nest in the frames? If so, do we need to spray or dust with chemicals?Contact an exterminator?
Thanks
Ask the Exterminator
16 Dec 2013, 16:42
Remove the dust cover from the bottom of the box spring. Vacuum and treat. You will have to continue treating to beat down the population. Dust lasts much longer than liquid pesticides. Just be sure to avoid contact.
Beej
02 Jan 2014, 18:11
"Now there are some times where the dermestid beetle..."

Uh, I believe you meant "times when" (it would be "places where")
Ask the Exterminator
03 Jan 2014, 11:41
Thanks! It's been corrected.
heather
26 Jun 2014, 16:35
Can carpet beetles fly?
Aerial
13 Jul 2014, 10:12
My mother has a problem with just the larvae. She presently put insulation in the ceiling of the basement and how the larvae are on the upper floor and the basement. Is it possible that the eggs were laid in the insulation? And how do we get rid of them?
noelle
17 Jul 2014, 09:13
I just found a few dozen tiny black oval bugs on my bed!! i do not know what kind of bug it is but I'm very freaked out and don't know what to do!?!?!? please help
Ask the Xterminator.
18 Jul 2014, 10:33
Identification is the first step in pest control. Collect a bug in a jar and take it to your local county extension agent's office for a proper ID. Once you know for certain what species of bug you have you can easily find what steps you must take to control it.
Jaimie
05 Sep 2014, 10:23
I have found 2 dead Larder Beetles in my home none alive so far. I have looked in our cupboards and our food and don't see anything I even vacuumed in the cupboards. I first realized while cleaning out my tv stand something made a hole in one of my books then a day later I found a dead Larder Beetle next to the tv stand and another pretty close to it. last night I found that our carpet was dug up and I found what I believe to be its eggs in the carpet they were dark and like a black shiny color. could there be more beetles or more eggs somewhere? are my 3 year old son,Guinea pig and Gerbil safe? I've also looked in their food and see nothing. please help us!
Ariana
01 Oct 2014, 11:50
I have found Dermestid tiny little larvae crawling my kitchen walls they look like picture you have above. Also im kitchen drawers in the corners found carcasses. Don't know what is are they attracted to do not buy food in bulk dont leave grains open. This past weekend was cleaning under my bed had a box of paperwork when i open envelope found carcasses around the edge of paper. Also in my daugters closet door rail. HELP!!!
Leah
09 Oct 2014, 23:02
Can I spray and wipe the kitchen drawers with vinegar? Will it help and make them leave?
Thank you!
GP
13 Oct 2014, 11:55
I have these tiny black dots in my carpet, literally thousands of them, and some of them very deep in the pile. I think they're carpet beetles. However, I've never seen any larvae, although I had some adult black beetles in my home this past spring. They don't bite but when I've been cleaning a lot or been on the carpet a lot, I get very itchy. I don't see any bugs crawling on the carpet, but sometimes it seems like they're kind of, like, popping out of the carpet, and sometimes I see something almost invisible whiz up and out of it across the room. When get one up with the vacuum (which is easier said than done)it kind of makes a popping sound, and sometimes it feels like I'm getting hit with tiny drops of water when I'm vacuuming. I'm moving to a new house in a week and I don't want to bring whatever this is with me. Please help!
Katie
16 Oct 2014, 19:35
I found a black beetle on my child's bed have not found anymore it was black with a thick body I have had problems with dampness in the past could this be the reason for these beetles both my kids have asthma will this affect them
Susan
25 Oct 2014, 03:05
GP, IN NO EXPERT BUT SOUNDS LIKE FLEAS... EXCEPT FOR THE POPPING SOUND WHEN VACUUMED... WHICH HONESTLY I DIDN'T UNDERSTAND REALLY TO BEGIN WITH... ARE YOU SURE THEY AREN'T FLEAS? AND I HAVE SOMETHING THAT LOOKS LIKE THE PICTURE ABOVE IF THE HAIRY LITTLE BUG... BUT WITH IT IS LITTLE ITTY BITTY REDDISH COMMITTED WORMS? LARVA? AND THEY MOVE LIKE FLY LARVAE MOVE... LIKE AN INCH WRITTEN KIND OF... ARE THESE TWO THINGS RELAYED? SOOOO DISGUSTING! PLEASE HELP!
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