You really should have buried the body:-) Just kidding! Still, carpet beetles (as larvae) feed on all manner of dried animal products, including: dry pet food, cured meats, furs, taxidermy mounts, and wool blankets and garments. Find the infested item or items and throw them out. Store vulnerable foodstuffs in glass or metal containers with tight-fitting lids. Store woolens and furs in a cedar chest, as cedar has proven repellent qualities. Chemical controls are almost completely ineffective on these resilient pests.

How do you suggest I find the infested item? They've been popping up mostly in my bathroom. We don't have any furs, taxidermy mounts, wool blankets, etc. We do have dry cat food, but it is stored in a plastic container, and I have not seen any of these beetles downstairs in my home, only in my bathroom and bedroom.

They can breed in dust (which is mostly shed skin cells, of course) and accumulated shed hair of pets and people, too. They're coming from one of those sources....