【Product Name】 Odor-Eliminating Sand for System Toilets 6L x 2 【Product Features】 ◇ Effectively eliminates odors with three deodorizing materials: citric acid, zeolite, and silica gel! This is non-clumping cat litter for system toilets. ◇ Citric acid neutralizes ammonia, suppressing odors and the growth of bacteria. Zeolite and silica gel absorb ammonia odors and moisture, contributing to deodorization and dryness in the toilet! ◇ Powerful deodorizing and antibacterial properties allow for approximately one month of use without changing (estimated).