Pest Out is an Electronic Pest repellent. Pest Out is MADE lN INDIA It is Environmentally safe, and has no chemicals It does not kill the pests, it drives them away. Pest Out emits high frequency ultrasonic sound waves to create an acoustically hostile environment that repels rodents from sound-protected rooms. It does not affect Humans. It's kinder than traps, safer than poisons, and completely inaudible to people and non-rodent pets. Unlike traps and poisons, Pest Out minimizes human contact with disease-bearing rodents (no dead rodents to dispose of). Effect can be seen after 7-10 days. Pest Out has the ability to provide long-term reductions in rodent populations by creating a "rodent-unfriendly" environment.