Pet Tooth Brush is an innovative teeth cleaning product developed with the super absorption capacity. It will remove petsâ?? stubborn stains on teeth easily and reduce the possibility of dental disease in future. Pet Tooth Brush is our exclusive patent product, itâ??s quite unique in the whole world markets. Pet tooth care with water only. No hurt enamel. Eco-friendly Instant result The nano technology is an innovative new teeth cleaning way. Its working part sponge strip is composed of the nano particles that are much smaller than ten thousands of human hair. When it gets wet, each nano particles form into nano capillary tube, which turns into a special 3D net-like structure with super absorption capacity and works fast to absorb the stains from your tooth surface.