We believe these are larvae! Readers find clusters of larvae from time to time on their walls and windows. It can be difficult to identify the specimens since most larvae are small and dark, but we usually believe they are moth larvae. This time, however, we aren’t so sure. When we zoom in on the photo, we can see the creatures more clearly. They have striped, segmented bodies, and they are covered in bristle-like hairs. We think these might be carpet beetle larvae, not moth larvae!
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Carpet beetle larvae are common household pests that readers deal with on a weekly basis. They have big appetites and can be pretty destructive. They prefer to eat household goods such as upholstered furniture, carpets, wool clothing, bedding, linens, and pet hair. However, if these items aren’t accessible, they will eat just about anything, including dried foods, dust, dirt, and other small particles.
While adult beetles thrive in the outdoors, larvae do better in a home where food is abundant and readily available. It is a mystery to us why this adult beetle chose the outside of our reader’s house to lay her eggs rather than the inside. We believe the white nest our reader mentioned are the eggs that haven’t hatched yet! There is a chance these larvae might wander into our reader’s home and wreak havoc, so we recommend our reader get rid of these larvae and the unhatched eggs on her wall. She can wipe them away with a paper towel or wash them away with a hose.
We also recommend that our reader to check her doors, windows, and vents to make sure they are properly sealed. Any small gaps or cracks could be an inviting entryway for these larvae, and we highly encourage her to do everything she can to keep them out of her home. They aren’t dangerous, but as we mentioned, they can be quite annoying and destructive!
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In conclusion, we believe the group of worm-like organisms our reader found on the outside of her house are carpet beetle larvae. We encourage our reader to clear away these larvae and to keep them out of her home, where they could become destructive pests.