Image Text: Bedbugs are small, oval, brownish insects that live on the blood of animals or humans. Bedbugs may enter your home undetected through luggage, clothing, used beds and couches, and other items. Their flattened bodies make it possible for them to fit into tiny spaces, about the width of a credit card. Bedbugs are active mainly at night and usually bite people while they are sleeping, making them hard to track. Most bites are painless at first, but later turn into itchy welts. Bedbug bites can be found on any skin exposed while sleeping. Some warning signs of a bedbug infestation include bug excrement, blood stains on sheets and pillowcases, bad musty smells, and more.