How To Tell If You Have Bed Bugs Or Fleas --- Flea bite Or bed bug bite? Both pests are going to bite you. They survive on blood meals. However, there are some differences in the way they bite and the symptoms of the bite wounds. It is helpful to know these differences. In this article, the local pest control pros at Miller Pest & Termite offer tips to help property owners tell if they have bed bugs infesting or fleas biting!