Like other notorious clothes moths, this species was widespread, abundant and troublesome. But now it has become scarcer since the introduction of artificial fibres and modern moth proofing insecticides, because the larvae don't grow well on thoroughly cleaned wool. Recently found more and more in owl pellets.

The larva feeds in a portable silken case and lives in birds nests, on feathers, carcases, animal fibres, owl pellets, wool, spices, hemp, tobacco and fur and stored vegetable materials. They moving into man-made habitats when the opportunity arose.

The adults have mainly been observed from beginning of May towards August. Observations outside this period are frequent since they often live indoors. They come occasionally to light.