Ultrasonic repulsive for repulsive mice against repulsive mosquitoes for garden dogs repellent for large animals More advanced: fleas help generate stronger ultrasonic waves that can affect the brain of insects and rodents, bringing them out of their homes. Linsectifuge can control mice, rodents, mosquitoes, ants, spiders, cockroaches, mice, etc. Sure and comfortable: The insectures are underdoors and without radiation. It pushes parasites and rodents with low -frequency sound waves which are harmless for humans and pets. In addition, the longer you work, the better the repellent.