sleep bugs tend to be small, oval, wingless pests associated with the family Cimicidae, which have a flat, reddish-brown human body and prey on human and pet blood. Sleep bugs are active at night and bite any areas of uncovered epidermis. Sleep bugs can infest a home and cover in cracks or splits around bedrooms or furniture. Though some bites may go unnoticed, sleep bug bites might also end up in localized itching, while the areas can become inflamed or infected whenever scraped. Sleep insects are not considered to send diseases to people.