What color? What shape? Triangular or thin barrel shape?
Open sealed box tops and check inside, under the flaps. Look inside cardboard box packaging, under the bag. Look on the outside of bag, inside the space of the bottom folded corners. Check under lip of screw on lids. Look inside peg holes for adjustable shelves on the wall. Check on the upper lip of cans. Check inside of lighting fixtures.
If ever you find thin, spider like web nettings, you know a moth larva has been there...or is more likely still there.
Good luck!