Max & Molly's new Soundshield collar attachment is a natural, chemical-free approach to fleas, tested and proven effective for up to eight months of continuous coverage. Simply attach to pet's collar, turn on, and it's ready to protect them without any toxins. The Soundshield emits a series of ultrasonic pulses that are harmless and imperceptible to both people and pets, but they disturb the natural patterns of both fleas and ticks, repelling them and keeping them away from your pet. The Max and Molly Soundshield pendant is especially suitable for pets weakened by illness, puppies and kittens, for old pets and for expectant and nursing females. Operating range about 1.5 metres. Features: Non-toxic, chemical free Lasts for up to 9 months of continuous use Protects your pet within a radius of 1.5 meters No contraindications - safe for all pets Silent ultrasonic impulses repel fleas and ticks Completely harmless to people and animals WATERPROOF for up to 30 minutes One size for all pets FAQ How does it work, Soundshield is 100% Chemical-free! This repeller uses the latest advanced technology that emits intense ultrasonic waves within a 1.5m radius at high-level frequencies to constantly deter ticks and fleas. Soundshield is 100% safe and inaudible to both humans and pets. Tested and proven effective for up to eight months of continuous coverage. How do I turn it on/off, There is a little button on the front. It says "Press right underneath. It is really hard to press, so it wont be accidentally turned on or off by your dog. How do I know if it is turned on or off, If it is turned on there is a green light blinking every now and then. When it is turned off or the batteries have run out it is not blinking. Who is it suited for, Because it is 100% free of chemicals Soundshield can be used for dogs of ALL ages, even puppies, older and sick dogs or pregnant dogs. Please note Soundshield is intended for use as a pest preventative and will not eliminate pests on an infested pet. Soundshield is designed for pets living in homes with their humans. It is not suitable for dogs that are either already heavily infested with parasites or live in an environment where they are confronted with a high population of ticks & fleas constantly. Who proved effectiveness, Effectiveness is proven by University of Camerino (Laboratory of Medical Microbiology and Infectious Diseases School of Biosciences and Veterinary Medicine). My dog likes the water is it suitable for it, Yes Soundshield is suitable for your dog it proved to be WATERPROOF for up to 30 minutes. In what radius is Soundshield effective, Soundshield has an effective radius of 1.5 meter