The moths prefer dirty fabric for oviposition .
The moths are particularly attracted to carpeting and clothing that contains human sweat or other organic liquids which have been spilled onto them ; traces of dirt may provide essential nutrients for larval development .
The moths prefer dirty fabric for oviposition and are particularly attracted to carpeting and clothing that contains human sweat or other organic liquids which have been spilled onto them ; traces of dirt may provide essential nutrients for larval development .