The Green Pee Cat Litter System uses a non-porous filler, pea gravel in a perforated tray sitting in a second tray that contains an absorbent layer of newspaper with baking soda. The cat urine flows through the non-porous pea gravel into the second tray where it is absorbed by the news and the odors are neutralized by the baking soda.
All you have to do is scoop out the solids from the pea gravel once a day and change out the newspaper and baking soda once a week. Once a month or so you change out the gravel. The gravel is hosed off or dumped outside where the rain cleans it and it can be reused.
My cats had to be trained to go on the gravel. I put regular cat litter on one side of the box and pea gravel on the other side. There was some mixing of the two as the cat used the box. Then I gradually used less litter and more gravel. Now my cats use the new system with only pea gravel and my life is a little easier
Green Pee Cat Litter System is green because it: 1- Stops all the cat litter going into the landfills. 2- Saves the cost of buying cat litter. 3- Recycles newspaper. 4- Saves time changing out cat box. 5- Helps control odor.