The Tickless Pet Ultrasonic Tick and Flea Repeller - Beige is an environmentally friendly way of getting rid of ticks. The device emits ultrasonic pulses that are imperceptible to humans and dogs, but it does disturb ticks and fleas. The operating range is approximately 1.5m and is primarily intended for preventive purposes. The device is a non-toxic solution and does not use or release any chemical substances or odours, making it safe to use even for young, elderly, ill or pregnant pets and lasts up to 12 months after activation.