Ferrets do get hairballs and ingest things they shouldn t. Marshall ferret lax is specially formulated to treat and prevent the formation of hairballs in the intestine and stomach. A specialized internal lubricant works safely and quickly. 100% Natural, Petrolatum, Malt Extract, Molasses, Cod Liver Oil, Soybean Oil, Tocopheryl Acetate. Protein 4.0%, Fiber0.1%, Fat 4.5% 4.5 OUNCES