Mosquito Killer 6 in 1 killer ( Pack of 6 )

Pest Repeller is a natural pest repeller using new electronics technology resulting from research into the life cycle of household pests to drive rats, mice, rodents and insects away electronically and intensively! Scientific research has found ultrasonic sound waves attack the auditory and nervous systems of most common pests causing them pain and discomfort. The high sound pressure will chase mice, cockroaches, fleas, ants and other common household pests away from their shelter. Ultrasonic Pest Repeller emits auto-changed and auto-sweeping frequency range of 21 KHz to 25 KHz from its speaker. This function is effective to drive pests away from the protection area quickly and to prevent pests from immunity to a pre-selected single sweeping rate.