Bed bugs (Hemiptera) are part of the same insect order as aphids and cicada. All life stages require a blood meal from their host acquired through piercing and sucking mouth parts. Feeding at night, they never stray far from their host’s nightly location.
Adult fleas are parasites that live off the blood of warm-blooded animals such as dogs, cats and humans. The flea population at an infestation consists of eggs (50%), larvae (35%), pupae (10%) and adults (5%); all stages are associated with the host. Fleas are capable of transmitting diseases between animals and humans and humans to humans. You do not need to own a pet to have a flea problem – adult fleas can be found in grass, sand or carpet.