Raid Bed Bug Detector & Trap lets you know whether bed bugs are present early, so you can treat them quickly. To detect them proactively, you must place these bed bug traps before an infestation occurs. Simultaneously place all detectors for thorough bed bug detection. Bed bugs seek dark places, like the detector, to hide during the day before feeding at night. Bed bugs, upon entering the detector, will become stuck to the adhesive inside. Dispose of trapped bed bugs by wrapping, sealing, and placing in outside trash. If even one bed bug is found, start a treatment program immediately.