... environment, keep sealed.6.Place of origin: Shanghai surechan (cat litter distributors). Features:1,eco-friendly;2,moisture adsorption,odor removal ... of silica gel cat litter,silica gel pet litter about 1.5 inches onto clean silica gel cat litter,silica gel pet litter box.2.Clean ... moisture.5.How to prolong applicable period of silica gel cat litter:1)For application, it should be put into ventilated ...