The best toy to have while working alongside your dog, either at home or in the office. goDog Silent Squeak are the perfect noiseless dog toys. All the fun of a traditional squeaker but without the noise for pet parents, Silent Squeak squeakers are tuned an ultrasonic frequency between 24 and 28 KHz , silent to people but not dogs. Silly and full of all the personality you expect from goDog toys, Made more durable with Chew Guard Technology which is a special manufacturing process that adds a super tough and durable lining to soft plush toys.