JANNIK C.E.T. Oral Hygiene Rinse for Dogs and Cats - 8 Ounces C.E.T. Oral Hygiene Rinse contains ZincChlorhexidate, a synergistic combination of two effective oral hygiene compounds to guard against plaque without brushing. C.E.T. Oral Hygiene Rinse also contains cetylpyridinium chloride for fresher, clean smelling breath.