Doing our best to use natural pest control methods that are the least ... But do these devices actually work? Ultrasonic pest repellers are devices that plug into an electrical outlet and ...

these ultrasonic pest repellers from Pest Soldier come in a set of four for less than $20. These work in indoor spaces up to 1,600 square feet, and work on cockroaches, mice, rats, flies ...

People like the idea of these devices and other natural pest control ... Insects: Some ultrasonic repellents also work on insects like mosquitoes, spiders, ants, and cockroaches.