TICKLESS® Home Chemical-free ultrasonic tick, flea, and dust mite repellent for homes TICKLESS® Home is 100% chemical-free repellent working with innovative ultrasonic technology that effectively protects your pet without emitting any chemicals or harmful substances. The method of using is simple, just plug it into a power socket and let it do its job. TICKLESS® technology underwent rigorous testing and was proven effective. Chemical-free No odors and fragrances Safe to use even for young, elderly, ill, or pregnant pets Covers 320 ft2 It has a nightlight function, that you can turn off Scientifically proven Long-lasting protection Preventive solution NIGHTLIGHT FUNCTION: The soft glow of the night light facilitates orientation in the dark, minimizing the risk of accidents and injuries. It can be adjusted to three different strengths and you can also turn it off. WARRANTY: In case of a technical malfunction, we offer 12-month warranty for the unit.