Clothes moths lay their eggs in fabrics, which develop into larvae.
Adult clothes moth do not damage clothing. Their function is purely to reproduce.
The larvae can cause great damage to carpets and clothing by eating the fibres. The most common site for this damage is in dark corners or under furniture where there is little disturbance. An infestation is not usually detected until after vacuuming and a section of carpet is found to be bare, or a piece of clothing is taken out of a cupboard and holes are found.