Hairballs can be prevented by frequent grooming and the routine taking of VetIQ Defurr-UM as directed. When cats and kittens lick their fur, that fur may be ingested, which then accumulates in their stomach and forms what is known as a hairball. VetIQ Defurr-UM helps to assist passage of swallowed fur through the gut to avoid the formation of hairballs. VetIQ Defurr-UM is a combination of natural ingredients which gently lubricate the system giving a mild laxative effect that removes the hairball and reduces future blockages. The VetIQ Defurr-UM paste coats the swallowed hair and the stool and allow it to pass through the digestive system of cats and other pets. VetIQ Defurr-UM also contains vitamin E and prebiotic inulin.