Bed bugs are known to feed on blood and are found in cracks such as mattress seams, furniture, picture frames, etc. They can hide in personal belongings and attack at night, troubling you in your sleep. They appear reddish-brown and hide during the day making it harder to identify their infestation. They feed on the blood of a host and can cause rashes and skin diseases. Also, as they can easily survive in cool environments without food for up to a year eliminating them without professional help is very hard.