2018 Ultrasonic Pest Repeller & Mosquito Repellent Plug in Pest Control - Electrical Mice Repellent & Rat Repellent in Pest Repellent - Bug Repellent for Flea,Ant,Fly,Roach,Spider-No More Trap & Spray Repels mosquitoes Use 1 stick for every 100-suare feet Each stick lasts 3 to 4-hour Contains 5 stakes