Fleas can infest a clean hotel or a well-kept cruise cabin just as easily as they can invade a dirty motel. Pest professionals often advise people that regular cleaning and vacuuming will help control fleas in their homes as vacuuming helps keep the pests at bay. You can also find outside fleas. According to the CDC, there are more than 300 species of fleas in the U.S. Common types of fleas in the U.S. include cat fleas, dog fleas, ground squirrel fleas, and oriental rat fleas.