Exotic Nutrition's Pumice Chew Block is a natural pumice stone ideal for Rabbits, Guinea Pigs, Chinchillas, Prairie Dogs, Degus, Hamsters, Rats, Mice, and Gerbils. FEATURES:✔ SAFE- won't splinter like wood chews, even after hours of chewing.✔ INSTINCT - satisfies your pet's natural gnawing instinct ✔ DENTAL HEALTH - Promotes dental health and naturally wears down teeth.✔ SAFE - Made from 100% safe, non-toxic materialsMeasurements: 1.5 inches L X 1.5 inches W x 1.5 inches HMaterials: Volcanic Pumice StoneDirections: Place the chew block in your pet's habitat in a clean, dry location. Replace when soiled. Always provide fresh food and clean water.