Bedbugs hide awasy in cracks and crevices, making them difficult to detect. Clear, safe, rigid plastic monitoring device slips between mattress and frame, or any other area in your home you want to keep safe. The proprietaqry gel attacts and traps bedbugs if they are present. Lasts up to 3-months depending on the environment, but typically last 3-weeks. Safe for use around children and domestic pets. Two bedbug alerts per pack.