16.9 oz Stainless Steel Double Wall Air Insulated Beer or Coffee Mug Our Pest Repeller Work well on mouse, cockroach, spider, bedbug, mosquitoes, insect, rat, rodent, flies, ant, fleas and more and more annoying pests via ultrasonic waves, Non-toxic and radiation free, 100% safe for your family and pets. . With intermittent changes of mice repellent ultrasound frequency, pests and mice cannot develop immunity and adaptability. Turn on the Pest control all day only consumes 0.096 kWh/day. The annual electric fee is much cheaper than purchasing a single pest control service.