[Dog Plate for teeth] Plaque] Plaque is our domestic animal ultrasonic tooth cleaner using real high frequency vibration technology to effectively remove the teeth of account and other pets. It can help prevent periodontal disease and other dental problems. Strong Note: When you first use the tooth cleaner, please select the soft mode until your dogs get used to the feeling of using it. .? Clean by cleaning the scale, higher efficiency, food and residues in the space. Fixed), IPX7 Rating You don't need to worry about damage during cleaning. .? Open the product and tap to a hard surface (such as stainless steel, glass) with the tip of the knife of the product. A noise will be produced indicating that the product works properly. Make sure there will be no noise when cleaning your dog's teeth. Please note that the product cannot be tested on surfaces such as plastic, wood or soft materials.