This is an effective, but gentle tooth cleaner for dogs. It contains 12000 more fibres than a conventional toothbrush. Simply slip it over your finger and gently rub with a circular motion. Lasts 4-6 weeks. It also contains antibacterial silver ions to destroy bacteria. It helps remove plaque and massages the gums, for whiter teeth and fresher breath. We use these in the grooming room, they cannot carry germs, so are safe to use again, or on your other dogs - just rinse and dry between uses. We find the dogs are a lot more tolerant than they are of a conventional toothbrush. We find they clean even more effectively when used with the Pristine tooth polish, you can feel it working on the teeth as you rub!