Here is what I do. There are 5 litter boxes in the house. I scoop them all twice daily....once in the morning, and once in the evening. Each litter box gets a thorough cleaning once every 5 weeks, since there are 5. I have it marked on a calender so I know which litter box to clean each week. I do it on Sundays. Instead of throwing all the litter away, I scoop it out with a cup and put it in a mesh strainer and shake it into a pan. Whatever doesn't fall through the strainer gets thrown away....this is usually small pee pieces of litter that were small enough to fall through the litter scooper but not small enough to fall through the strainer. Once the box is all emptied out, I take it outside. I put dishwashing detergent in it, take it outside, put some water in, and scrub it down with a brush. Once it's rinsed, I pour Clorox in it and put more water in it. Then I let it soak for 40 minutes....10 minutes on each side (I lean it on something so the water goes up the side of the box...which is a large rubbermaid container). Once soaked for 40 minutes, I rinse it out again and then let it dry out in the sun....if the sun is out. If no sun, then I just towel dry it. The litter that was sifted through and is now sitting in a pan....it gets dumped back into the cleaned litter box and a little more is added if needed.