Ultrasonic Technology: This lightsmax ultrasonic pest repeller sends ultrasounds to disorient and perturb pests, drive them out from their shelter, which can take care of your problem on mouse, cockroach, spider, mosquitoes, insect, rat, rodent, flies, ant, fleas and more pests. Drive out pests from your home! Effective Mosquito Killer: This bug zapper uses 14 powerful high-intensity UV bulbs that is effective to attract and entrap mosquito and other winged insects within 10-30 square meters. Once mosquitoes, fruit flies and moths are attracted by ultraviolet light they will get an electrical shock when it comes into contact with the electrified grid. Large Coverage: Effective for an area up to 100 square meters. As ultrasonic waves can't penetrate the wall, it is recommended to use at least 1 product per room. Great for kitchens, cafes, warehouse and hospitals. Safe for Human Beings and Pets: Electronic mosquito killer is free of any chemicals and odors. Non-toxic, non-noise, non-radiation. Great for places where pesticides can't be sprayed like kitchens and baby room etc.