Fresh urine stains can be treated with a water and vinegar solution. Wash the urine with water and wipe it off with a washing cloth or paper towel. Mix white vinegar and water in equal proportions and apply the solution to the affected area as well as a few inches around it. Wipe with a rag or paper towel and let it air dry.
If the stains are old and stubborn, cover the affected area with paper towels.
Spray hydrogen peroxide generously on the paper towels so that they are completely moist.
Let the moistened paper towels sit on the stains for several hours.
If it is hot outside and the paper towels are drying out too quickly, either cover them with a plastic sheet or keep applying hydrogen peroxide regularly.
Remove the paper towels after a couple of hours and sprinkle any bsorbent powder liberally over the stained area. Kitty litter or baking soda are the best and easily available items, since they not only absorb the dampness but also the stinky odour.
Let the baking soda or cat litter stay on for a few minutes.
After the moisture has been completely absorbed, sweep the absorbent powder on a dustpan and dispose it off.
Allow the treated area to air dry.
If you can still see remains of the stain, repeat the process. Remember it may take several applications to completely remove the stain.