Here's what you need to know.
They're not invincible, but pros might have to resort to other techniques to nix your unwanted roomies, such as extreme heat (up to 140°F), extreme cold (reaching -20°F), steam machines, or commercial-grade vacuuming.
If you see a bug or think you have them—you wake up with bites or see pin-size brown stains on your sheets (bug poop)—call an exterminator ASAP. They'll determine the best way to de-bug your home.
This article originally appeared in the September 2017 issue of Women's Health. For more great advice, pick up a copy of the issue on newsstands now!