Hills Prescription Diet TD Dental Care Chicken Dry Dog Food has been formulated to reduce plaque, stain & tartar build-up and clean up to the gum line. It works like a toothbrush and is formulated as a complete and balanced nutritional solution for your dog's daily health regimen.The kibble contains clinically proven triple action fibre matrix technology to remove plaque, stain & tartar build-up. The special matrix of fibres scrubs the tooth to remove plaque which helps freshen breath. The large kibble size, shape and texture cleans the teeth to the gum line to promote healthy gums and teeth. Exclusive feeding of Hill's Prescription Diet t/d Dog Dry Food has been shown to be more effective than toothbrushing due to the fact that only a few dog owners brush their dogs' teeth regularly. Hill's nutritionists & veterinarians developed Prescription Diet t/d clinical nutrition to promote healthy gums and teeth and support your dog's overall health. Hill's Prescription Diet t/d Dry Dog Food i