A blood-sucking mosquito bite is more than a sharp, unpleasant pain. Mosquitoes pose a very real threat to your health. Electronic Mosquito Repeller imitates the sound of the Dragonfly, the mosquitoªs mortal enemy. The Coleman Mosquito Repeller constantly emits powerful ultrasonic signals that mosquitoes instinctively fear and will do anything to avoid. Just clip the Coleman Repeller to your clothing and youªre protected. The unit wonªt bother humans or pets but it keeps mosquitoes away from you. Ideal for gardening, fishing, patio decks, walking, camping, any outdoor activity. 3.5 inch Repeller conveniently clips to clothing, backpack, or use with supplied key chain, comes with 1 (AA˜ battery.