Ultrasonic tick and flea repeller for cats, dogs, and other lovable furry animals. (For small-sized pets we designed the Tickless® Mini Dog & Cat device which is smaller and means a great fit for them.) Environmentally friendly contains no chemicals or fragrances. By fastening the easy-to-use, tiny device onto your cat's or dog’s collar, parasites can be kept away for 6-12 months after activation, leaving you and your pet free to enjoy nature. Due to the latest field study, we can conclude that the device is 94% efficient against ticks without using any dangerous chemicals! It is non-toxic and does not use or release any chemical substances or odors, making it safe to use even for young, elderly, ill or pregnant pets. The device emits ultrasonic pulses that are imperceptible to humans and pets, but interfere with the ability of the parasites to orient themselves, thus keeping them away from your pet. The device is primarily intended for preventive purposes. Tickless® technology underwent rigorous testing and was proven effective by a clinical study at the School of Veterinary Medical Microbiology and Infectious Diseases Laboratory at the University of Camerino, Italy.