To provide a technology that, when producing animal litter sand, contributes to the effective prevention of scattering of particles without increasing the weight or density thereof in vain. [Solution] The method for producing animal litter sand containing a particulate assembly has a step for forming the particulate by adding water and mixing at least: a particulate substrate configured from an inorganic porous material a hydraulic solidification material and a water-soluble thickener.提供一種動物用便器砂的製造時,其重量或密度不會無意義地增大,並有效地防止各粒狀物飛散的有用的技術。本發明是包含粒狀物的集合體的動物用便器砂的製造方法,至少具有將:由無機多孔質材料所構成的粒狀基材、及水硬性的固化材、及水溶性的增黏劑加水混合形成粒狀物的過程。100‧‧‧動物用便器110‧‧‧動物用便器砂收納容器112‧‧‧底面部114‧‧‧空孔120‧‧‧吸液薄片收納容器130‧‧‧側面蓋140‧‧‧動物用便器砂150‧‧‧吸液薄片