Black light electric fly trap uses no insecticides, Replaceable glue board catches flies and other flying insects, Meets FDA and USDA standards, Not a Bug Zapper!. Most flying insects are attracted to light. Houseflies and other nuisance flying insects are highly attracted to light energy in the black light spectrum. This 15 x 6 electric black light trap is economical and easy to maintain. Meets FDA and USDA standards for use in food preparation areas. Because it does not use insecticides, this trap is safe, nontoxic and sanitary. Use in milk tank rooms, livestock barns, restaurants, food processing areas and any other indoor area where flies are a nuisance. Replace glue board in the catch tray every 30 days or when full. One glue board included. Single light. Replacement glue boards sold seperately (Item No. 127498), sold 25 per box. Livestock & Agriculture Supplies, Ant, Fly & Mosquito Control, Ant Traps & Fly Traps