Vitax Scent Off Gel discourages pets from fouling and staining lawns and flower beds. A ready to use gel formulation it contains methyl nonyl ketone a poular dog/cat repellent. The gel releases a strong perfumed odour over a period of days to confuse the dog’s sense of smell and encourage it to move to other untreated areas. Cats are even more sensitive to smells and can also be persuaded to go elsewhere.