ProDen PlaqueOff Animal. Introducing a new innovation in animal oral care. ProDen PlaqueOff Animal contains a specially selected seaweed of the Ascophyllum Nodosum family, which is naturally harvested from the seas of Norway and Iceland and has a patent pending for the systemic use of the seaweed for the reduction of plaque and calculus. In trials conducted in Sweden, ProDen PlaqueOff Animal was shown to improve bad breath and prevent plaque and calculus accumulation, with results seen between 3-8 weeks. Suitable for cats & dogs and free from artificial colours, preservatives, gluten and sugar. No hassle - simply add to wet or dry food once daily