16 0z - 3% Hydrogen Peroxide (if using 6% H2O2, dilute 50/50 with water)
1 Teaspoon mild Dishwashing Liquid
1 Tablespoon Baking Soda
Directions:
Remove as much stuffing or padding, upholstery coverings, etc., as you can.
Completely Soak the saturated areas (plus a little more for good measure) with cold water.
Use clean white cloths or paper toweling to pat dry the area. Use deep pressure to draw as much of the urine out as possible. Do not rub or scrub.
If your padding is removable, soak with water and squeeze it out good.
When you have removed as much cat urine as you can, Mix the cleaning solution (H2O2, liquid soap, baking soda).
Wearing gloves, immediately saturate the areas with the solution. Use a white clean cloth to help you squeeze the cleaner into hard-to-reach places. (Place your padding in a large sink or tub, and soak thoroughly).
Once everything is fully soaked through, allow the cleaning solution to stand for a minimum of 15 minutes before sopping up as much liquid as you can.
Let air dry completely. This may take a while, maybe even a day or two--do not rush the drying.
Then, vacuum.
Notes
1. DO NOT mix this until you are ready to apply it. Hydrogen Peroxide stays active for only 15 minutes.
2. DO TRY this on a small, inconspicuous area to be sure it is color safe on your upholstery, carpet, etc.
3. USE gloves to protect your hands.
Recipe by Life With Lorelai at https://lifewithlorelai.com/2016/04/05/fresh-step-litter-master-diy-cat-toy/