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Official Blog of the UC Master Gardener Program of Contra Costa County
by Minda
on January 3, 2016 at 4:06 PM
how do you get rid of those black beetles ..and they stink too
Reply by Stephen I Morse
on January 3, 2016 at 4:58 PM
HOrt COCO editor here:  
I believe the posted blog gives you a fairly good summary of what to do, but I would capture several of the bugs and either take good closeup pictures of the bug and transmit them via email to the MGCC Help Desk or bring them into the MGCC Help Desk in Pleasant Hill for positive identification (details are at the bottom of the blog). The blog post describes how and where to contact and/or visit the Help Desk during office hours. The reference given in the blog which you can download (free) from UC gives even further detailed information beyond the summary in the blog post.  
If you are "lucky" and there is just one carpet beetle or larvae, you may not have to do much... but as the blog indicates, if you have found several, you are probably going to have to do some serious sanitation and exclusion to eliminate them.  
In summary, we again recommend that you get a positive identification of the "beetle" and that you read again the blog as well as the UC Pest Note at  
The MGCC Help Desk looks forward to further contact via the Help Desk email and/or phone to provide you with the identification and information on elimination of the "beetle".
by Adam
on February 17, 2017 at 11:55 AM
I've just discovered these guys in the trunk of my car. I intend to shampoo and vacuum but would a bug bomb aid in the elimination of these guys using my ride as a mobile home? I had a couple rag's and a towel and an old buton up shirt hanging out in my trunk for awhile now, figure they must have snuck in from the field by my work where I park and found those old rags as food and shelter.
Reply by Steve I Morse
on March 30, 2017 at 11:56 AM
apologies for late response... apparently got by me...  
Don't really have a source to go to for the "official" answer, but yes a household bug bomb should work... I do suggest letting it air out after you apply the bug bomb and cleaning so that next time you open the trunk you aren't "bombed" as well.  
by shira willson
on June 7, 2019 at 4:44 AM
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by Anna Dawn
on January 15, 2020 at 9:30 PM
This is really a common and stressful problem. These bugs are difficult to control because these are tiny and expert in escaping. It also occur in furniture. To know more visit
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