Flea larva

Typically found in carpets, upholstery, pet bedding, and floor cracks in environments where a host (dog or cat) is present.

Larvae feed on organic debris and 'flea dirt' (dried adult flea excrement consisting of semi-digested blood).

Larvae are photophobic (move away from light) and require high humidity; they go through three larval stages before spinning a cocoon to pupate.

Risks include the development of adult flea infestations involving painful bites to humans and pets; they can also be intermediate hosts for tapeworms (Dipylidium caninum). They provide no ecological benefits in a domestic setting.