If the spot has been wet longer than 10 minutes it s probably soaked into the carpet pad.
Removing urine from carpet padding.
Dog urine and pet odors are an issue of the pad and not the carpet.
When urine is seen on the towel under your shoes pick up the towel and cover the urine with an unsoiled section of the folded towel.
Spray an enzyme cleaner on the carpet to get rid of heavy stains.
Fixing the problem may require that you remove the carpet and replace sections of the hardwood underneath.
Urine can often soak through the carpet and into the subflooring leaving a stain and a stench that can t be lifted with carpet cleaner and elbow grease.
If you have pet odor that will not go away despite your best carpet cleaning efforts neutralize the scent by using an oil based stain blocking primer on the subfloor beneath the carpeting.
Over time that subfloor becomes more and more saturated with the urine and will begin to rot.
To treat fresh stains just blot the urine with paper towels neutralize the scent with vinegar and deodorize with baking soda.
When fido pops a squat the urine puddles on the carpet for a moment then is absorbed into the carpet pad as the pad is equivalent to a sponge.
Use a clean cloth to blot the mixture up to remove the urine stain.
Mix these two ingredients together and spray the mixture onto the stain so the carpet is saturated.
If dog urine has soaked through the carpet through the carpet padding and onto hardwood flooring you are likely in for a massive headache.
The urine eventually evaporates leaving behind concentrated amounts of salt and bacteria in it s place.
It helps if you sprinkle baking soda on the stain before spraying the hydrogen peroxide mixture.
Why is urine in carpet such a stinky mess.
For old and or dried urine stains on hardwood floors or carpets follow these steps.
Repeat as necessary to get the liquid up.
If you can t remove the smell using this method try contacting a professional carpet cleaner or using a steam cleaning machine.
Soak a towel with a hydrogen peroxide based cleaner.
If the urine has dried onto the carpet for a long time use a store bought enzyme based cleaner to remove the smell.
As the urine dries it crystallizes and those crystals are what cause the smell urine stains also promote bacterial growth which can add to the smell when those remnants get trapped in carpet fibers under the carpet in the padding and even in the subfloor the smell sticks around until you remove them.