Product description: Just keep spiders away by ultrasonic technology.No, they don't do anything to us. But still, we don't want spiders in our rooms. Drive the animals away easily and permanently with this ultrasonic device that you simply plug into the socket. SpinnenStopp for 30m² rooms repels spiders and keeps them away permanently if you leave the device permanently in a socket. SpinnenStopp 30 m² emits varying ultrasonic waves, which are perceived as disturbing by spiders. For humans and pets (dogs, cats, birds and fish), these ultrasonic waves are imperceptible or barely perceptible. The advanced ultrasonic waves influence the spiders' sensory organs and stress them so much that the animals avoid this area. Due to the continuous change of the specific ultrasonic waves, spiders cannot get used to the interference. SpinnenStopp 30m² has no influence on the function of other electrical devices or the Wi-Fi. The ultrasonic device can be operated flexibly in any 230 V socket. The power consumption of SpinnenStopp 30m² is max. 2 W per year.