Huge area of effectiveness:It has an incredible area of effectiveness, being able to zap mosquitos up to 400 sq ft, suitable for indoor.Turn it on three hours before bedtime will have the best effect.Upgraded UV bulb Lamp: Good quality lure mosquitoes by UV light lamp, and kills them instantly by 1000V high voltage grid. Highly effective to kill mosquitoes, fruit flies, moths and other flying bugs. Perfect to protect your family from annoying mosquito buzz and biting.Safe and Non-Toxic: kill mosquitoes via electric shock, No Chemical, Non-toxic, No Smell, No Spray, No Environment Pollution. Totally harmless for the infants, pets and the pregnant, and eco-friendly.Completely silent noise-free : no loud than 20 dB, won’t disturb your rest and sleep, comfortable for night time use. Suitable for bedroom, living room, office, kitchen, hotel, restaurant, etc.Easy to clean:Easy remove and install trays for collecting flying worms such as mosquitoes, just twist the bottom tray and clean with a soft brush.please freely get back to us if you encounter any issue.