#$%^&*AU2012204086A120120802.pdf#####Abstract The present invention relates to a floor material for pet animal urination used in a pet animal litter system having a floor material for urination, which is of water-absorbing grains, for prompting a pet animal to excrete arranged in the upper tier and an absorptive material in the lower tier for absorbing urine passed through the floor material, wherein a surface of each of the water-absorbing grains is coated by a water-semipermeable coating, which is slow in urination absorbing speed. Because of the water-semipermeable coating, urine is prompted to pass between the water-absorbing grains, and residual urine sweating the surface of the water-semipermeable coating is gradually absorbed into the water-absorbing grain through the water-semipermeable coating.
