Your Vet,should carry a Cat Shampoo,that is safe,and effective,but getting a Cat,to sit still,for a bath,is not an easy task,i remember,when Mr Fluffy,had poo,behind,the tail,and I had,to bathe him,in the Laundry Tub.PU! And I had,to waer Leather Gloves,as My Pal Mr Fluffy,was not a Happy Camper!