Most people assume that fleas and ticks get inside the home through family pets that go outdoors. But most pests get inside the same way you do—through the front door. Doors and windows are far more common points of entry than coming in through the walls. And while they can wind up inside by attaching themselves to your dog or cat, that cracked window or open door serves as an invitation to come into your home.
Once inside, fleas will often burrow into your carpet and lay eggs, starting a life cycle that requires, at minimum, a two-step treatment to help ensure the infestation is gone. While ticks tend to be more problematic in rural or forested areas, they can still affect homes that back up to water sources like creeks, or greenbelts ripe with brush. Ticks get inside from you or your pet being outdoors, and they prefer warm, tight spaces like inside socks or waistbands—even your groin or armpit.