Boric acid—Found as a powder in many supermarkets, boric acid can be sprinkled on an infested carpet and quickly kill embedded carpet beetles. While poisonous to humans only if ingested in large quantities, boric acid may not be a viable treatment option for pet owners.
Diatomaceous earth—This natural product is found online and in agricultural stores. It works by dehydrating carpet beetle larvae. It’s dispensed in a similar manner as boric acid but is available in food-grade models for additional safety.
Vinegar—Water and apple cider vinegar can be poured inside of a spray bottle and applied to infested clothing, carpets, and upholstered furniture. If you notice carpet beetles crawling along clothes in your wardrobe, wash these pieces with vinegar and water to kill any remaining eggs and larvae.
Vacuuming and steam cleaning—Using a traditional vacuum to suck up carpet beetles and surrounding larvae can be an effective solution. If you need a bit more power, using a steam cleaner is an effective option that combines heat and suction to kill carpet beetles.