Ultrasonic Pest Repeller - Electronic & Ultrasound, Indoor Plug-in Repellent - Get rid of - Rodents, Mice, Rats, Squirrels, Bats, Insects, Bed Bugs, Ants, Fleas, Mosquitos, Fly, Spiders, Roaches! 4 pieces: 1 piece for FRONT, 1 piece for BACK, 2 pieces for INSIDE Water and UV protected, Scratch Resistance Gloss laminated for longest durability Easy to apply, clean, and remove Corners are designed uncovered to make hands more comfortable when holding device