carpet moth

US /ˈkɑːr.pɪt ˌmɑːθ/
UK /ˈkɑːr.pɪt ˌmɑːθ/
"carpet moth" picture
1.

a small moth whose larvae feed on natural fibers, especially wool carpets and clothing

:
We found signs of carpet moth damage in the old rug.
To prevent carpet moths, regularly vacuum and clean your carpets.