State of the art ultrasonic mouse technology: ultrasonic rat repellent uses ultrasonic waves to influence the brain of the pest and drive it out of your home. Ultrasonic mouse repellent work effectively without chemicals or toxic products. Multi purpose rat repellent: Ultrasonic repellent applied to repel mice, cockroaches, spiders, insects, mosquitoes, insects and ants. You can only have this ultrasonic mosquito repellent for many harmful animals without some other traditional mosquito traps. Large cover ultrasonic anti mouse: spider repellent cover up to . We recommend one unit per room to achieve the optimal result as the ultrasonic wave would be influenced by walls or solid objects. This ultrasonic plugin is suitable for home, office, hotels, restaurants, attics, ... Simple use insect repellent: this indoor mouse repellent can be started by simply plugging the spider repellent into the socket corresponding and unplugging it to turn it off. The rodent repellent works automatically and should take a few days to work effectively.