The ProDen PlaqueOff® Powder for cats is a 100% natural pet food supplement containing the natural kelp ingredient A.N ProDen™ – shown in clinical trials to help reduce plaque and tartar and to help improve bad breath. The results are usually seen between 3 to 8 weeks, with continued use. Sprinkle the powder over the cat’s ordinary food once a day with the supplied scoop. The Powder Cat has a tasty formula containing brewer’s yeast specially made for cats- your cat won’t be able to resist it! A 40g bottle can last up to roughly 4 months.