Peston is an electronic ultrasonic pest repeller device. Its ultrasonic pest repellent is environmentally safe and has no chemicals it does not kill the rodents, cockroaches, spiders, ants etc. but drives them away. This ultrasonic repeller emits high frequency ultrasonic sound waves to create an acoustically hostile environment that repels rodents, cockroaches, spiders, ants from sound-protected rooms. It does not harm humans. It's kinder than traps, safer than poisons, and completely inaudible to people and non-rodent pets. Unlike traps and poisons, peston minimizes human contact with disease-bearing rodents (no dead rodents to dispose of). Effect can be seen after 10-15 days. Peston has the ability to provide long-term reductions in rodent populations by creating a "rodent-unfriendly" environment. Our ultrasonic pest repellent drives out insect like cockroaches, spiders, ants etc.