The dematters are great tool for pulling out dead hair which is probably what hes done so it wouldnt hurt him, if hes still got matts i would suggest you book him into the groomers, Im not suggesting you arent capable of clipping him but I think something like that especially if the matts are close to the skin should be left up to proffesionals, I know from experience at work that shaving matts out of a matted dog can be quite tricky and most dogs dont like to make it easy by keeping still


Anyway let us know how everything goes!