This ‘recipe’ is a clone for ‘Yesterday’s News’ cat litter.
Shred or tear up a bunch of newspaper (no slicks). Soak in a bucket of water that has a bit of dish soap. I found that soaking for several hours produces a better end result. I just use my hand to mix it all up to make sure the fibers are all breaking down. Then I drain it using an old colander. Back into the bucket with clean water to rinse. Drain again, pressing out as much water as you can. Mix in some baking soda, then crumble it over an old window screen to dry. Newspapers use soy based inks now, but you will NOT be able to get the bucket or colander clean again, so use old ones. Do not drain this into your sink. The cellulose in the paper could potentially clog up your pipes.
Every day I pick out the poops from the litter boxes. This seems to control urine odors as well as any purchased kitty litter. I live in the country, so I just scatter it around my property.
*The way you introduce this to cats is to put a layer of this over your existing cat litter. Each time you scoop stuff out replace old with this until you've completely made the switch. I have an old picky cat who has used the same Tidy Cats all of his life, he LOVES this stuff!