Silica Gel Cat Litter Specification Size: 1-8mm, 2-6mm Specification: 3.8L, 4L, 5L, ***** Ingredient: silica gel 100% Color: white, green, blue, pink� Shape: lump Density: 400-450g/L Water content: �5% PH value: 4-8.5 Loss on heat: �3% New to the market is litter made from silica gel, an odorless mineral that is used in little packets to control moisture in packages. The litter consists of silica beads or pellets that absorb urine without the need to scoop. With this product, you don�t need to worry about the cleaning of cat box. Non-toxic and odor free! The main composition of Litter Secret cat litter is amorphous silicon dioxide like the composition of natural sand, so it is non-toxic, it is safe for you and your pets, even if swallowed. After used, you can put it under the ground, after approximately one month, it will return to natural sand. Free from sticking to cat's paw! Due to the unique advantage compared with other traditional cat litters, silica gel cat litter does not stick to pet's paws. if you are interested so please feel free and send inquiry to us for more details. your inquiry will be appreciated.