Urine is composed of organic and inorganic substances , mainly water and waste products. Once deposited onto a surface  such as carpets the urine changes from Acidic liquid to become a Alkaline salt , the salt then draws moisture from the air thus causing the urine odour to activate.

Urine can sometimes lay dorment for long periods of time even years until a change of conditions such as weather changes for example hot and warm days, recleaning of the carpets as the urine has been distitubed and  re-occurance of urine odour can be associated with pets leaving additional deposits in familiar area’s.

At times the damage can be severe and permanent as urine can damage carpets. In some cases the urine is in the underlay and this needs to be treated also or replaced. Urine has two basic problems Odour and Disclouration. The colour loss from carpet after urine has been deposited is due to the change from Acidic to Alkaline salt as the salts cause damage to the dye and fibres.

Detecting the problem area is use your sense of smell (nose) this is the best way of locating or  the use of a black UV light can also be used if the deposits are not visible.

This home remedy for cleaning dog urine from carpets is easy and inexpensive

Below is a recipe which removes dog urine smell and stains from carpets and rugs even if the urine has dried and is old.

If the area is still wet you should first attempt to absorb the pet urine. Leaving it there to dry out will only encourage bacterial growth which causes the smell.

The best method is to place several layers of paper towel over the wet area and tread on it so as to soak up as much of the urine as you possibly can. You may have to repeat this several times until no more urine can be soaked up.

  1. Mix a solution of fifty percent white vinegar and fifty percent water. You must use a liberal    amount of this solution to reach the carpet fibers deep down. Work the solution into the carpet with a soft brush (or your fingers) to ensure it penetrates the carpet fibers below.

Then blot the area using the paper towel method to absorb the vinegar mixture. The vinegar will neutralize the ammonia in the urine. If you own a wet/dry vacuum extractor use that to remove excess moisture.

  1. When the area has dried or almost dried sprinkle a good handful of baking soda over the soiled area.

Mix half a cup of 3% hydrogen peroxide with a teaspoon of detergent. Plain liquid dishwashing detergent is required. Do not use caustic dishwasher detergent.

  1. Slowly pour the hydrogen peroxide and dishwashing detergent mixture over the baking soda. Alternatively you can use a spray bottle for the hydrogen peroxide solution. Then work the baking soda and hydrogen peroxide mixture well into the carpet with your fingers (put on some rubber or latex gloves) or with a soft brush. Allow the area to dry completely. Once the area is thoroughly dry, vacuum up the baking soda. A fan or heater can assist drying. Use a hard bristled brush to loosen up the baking soda if necessary.