TRACKSLESS LITTER PEARLS is the most popular Litter Pearls Silica Gel Cat Litter. It is an irregular shaped crystal so they will not roll if the cat pushes them out of the litter box. Tracksless Litters are super effective at eliminating odors from urine and feces. Cat Safe. Non-alergenic. Fragrance free. One bag last one cat one month. br/>Sold in Quantity of:1