Check the listing for details. Electronic Pest Repeller Plug In Ultrasonic and Sonic Reject Bats Mouse Rat Home. Color: Black, Condition: New. Listed at 14.99 USD. Wide Coverage: Each insect repellent covers an area of up to 1600 square feet. It’s widely used in homes, warehouses, offices, gardens, hotels, etc. Only a few products are needed to protect the whole family from insectsQuiet And Effective: Ultrasonic pest repellers work with low frequency ultrasonic waves, which are difficult for humans to hear. But it is very effective for rodents and pests, ultrasonic waves let them leave your home quicklyThe principle of Ultrasonic Pest Repeller : Through low-frequency ultrasonic waves, the brain and auditory nervous system of mice and pests are stimulated, to expel most types of pests effectivelyLess power consumption: keep you away from cleaning up dead pests, odor and corpses of plug in pest control, no batteries, saving a lot of moneyEasy to use: Pest repellent ultrasonic plug in a power outlet; The ultrasonic pest repeller start when the blue light turns on，Repel many kinds of pest Against rodents, hamsters, mice, fleas, ants, mosquitoes, flies, spiders, cockroaches, bugs, rodents, and insects