








Head lice live on the human scalp, requiring warmth to survive. They are most active at night.
Detecting blood-feeding pests requires looking for different clues depending on whether the culprit is hiding in your hair or your mattress. While both head lice and bed bugs are small, wingless, and feed on human blood, their habitats and signs are distinct.
Look for small, light-colored eggs (nits) stuck firmly to hair shafts. They resemble small dewdrops and cannot be brushed away.