The Pedigree Dentastix Large Dogs Treat are a chew-tastic mouth crunching delicious treat which helps reduce the build-up of tartar making these doubly good. Recommended by Vets the Pedigree Dentastix helps reduce the build-up of tartar by approximately 80% when eaten daily, improving the oral hygiene of your dog. Pedigree DentaStix are designed to be chewed for long enough to be effective, with a gently abrasive texture and active ingredients that help to reduce the build-up of plaque and tartar.Active ingredients: Pedigree DentaStix contain two very special active ingredients (sodium tripolyphosphate and zinc sulphate), which bond with the calcium in saliva and slow down the build-up of tartar. This helps plaque stays softer for longer and makes it easier to remove by chewing Pedigree DentaStix.Size: Suitable for dogs weighing over 25kg Ingredients : Cereals, Derivatives of Vegetable Origin, Minerals (Sodium Tripolyphosphate min 2.6%, Zinc Sulphate min 0.11%), Meat and Animal Derivatives, Contains EC Permitted Preservatives and Colourants, Free From Artificial Colours, Free From Artificial Flavours