Electric Mosquito Bug pest Fly flying insect Zapper Lantern Killer Home Indoor The bug zapper can be used in bedroom, hall, hotel, office, kitchen, warehouse and any other places where need insects' killer. The effective killing space is 16/172.2225667 sq.ft., without anything to obstruct the killer's light. The killer is designed with power saving, decorating, soft lights, so it should be used in a place without strong lights. Using the killer in bedroom without turning on any other lights for 10-20minutes, or put the killer in the darkness under a table while working studying, are all all the good ways to use the killer. Suggested Using Height: 0.8-1.2M, and the distance to wall should over 0.3M. Put at most the benefit puts out the mosquito in the place that kill, closing tight doors and windows. Chemical Free and hypoallergenic/Includes 42 long cord to kill bugs all around the home and office