Fleas are tiny, fast-moving parasites that live off the blood of animals—and occasionally humans. In Arizona, flea problems often begin when a pet picks up fleas from the yard, a park, or another animal. Once inside, fleas quickly lay eggs in carpets, furniture, and bedding, leading to widespread infestation.

Their bites typically appear as small, red, itchy bumps around the ankles or lower legs. You may also notice excessive scratching in pets, flea dirt (black specks) in fur, or tiny insects leaping from surface to surface.