Expert: Dear Tabbi - 10/1/2008

Question
Hello:

I moved to a new apartment and it seems whoever lived here before me had pets and did not litter trained them.  On one corner of the apartment there is a big copper color stain and a bad odor and my cats cannot control themselves.  I have argued with management and it seems I might be a on my own for a while.  I have tried Nature's Miracle and many other products but nothing, even purchased a carpet steamer/shampooer and got away most of the stain and the odor has been masked a bit but it is still there.  I will try Urine-Off and see if it works but I might just pull the carpet up and cut at least the part of the padding that is bad and replace with a new but I know the odor will still be on the carpet and probably on the concrete below.  Do you know of a product or a way to make the odor go away?



Thanks


Answer
William,

Here is a 'receipe' for cat urine odor removal:

1 quart of 3% hydrogen peroxide
1/4 cup baking soda
1 teaspoon of liquid soap

(3% hydrogen peroxide can be bought at most grocery and drug stores in pint and quart bottles).

Gently mix all ingredients in a non-metal container. Do not mix or shake vigorously!

The mixture is best used when fresh but can be stored. Do not keep mixture in an airtight container.  Have a VERY loose lid as baking soda and hydrogen peroxide when mixed together will release oxygen and an airtight container will explode. You can mix and keep it in large spray bottle (Home Depot, etc.) but a plastic liter or 2-liter soda bottle works just a well.

Always test for color-fastness. Hydrogen peroxide is a bleaching agent in stronger concentrations and can lighten materials that are not color-fast.

HOW TO REMOVE CAT URINE ODOR FROM CARPETS

FOR INDIVIDUAL URINE SPOTS ON CARPET:
If fresh, sop up as much cat urine as you can with a paper towel first. Use a spray bottle to saturate the spot completely with the recipe - do not blot. The recipe must penerate the padding and possibly the floor boards underneath, where the urine has penerated for it to work.

Wait 24-48 hours until dry then vacuum. If the urine odor is still present - repeat the procedure. It usually takes 2-3 applications to completely neutralize the cat urine odor.

FOR LARGE AREAS OF CARPET:

You can use a carpet cleaning machine - one of your own or a rental and use the recipe instead of the shampoo. You will have to make several gallons of the recipe depending on the size of the carpet. Don't use the vacuum part of the machine - you will want to let the solution soak and dry for 24-48 hours before vacuuming.

Most carpet cleaning machines are not made for this use, and baking soda can clog the nozzles of the machine so use caution. Instead, you can use a 1 gallon garden bug sprayer (Home Depot, etc.). Rinse the nozzle out frequently by filling the tank with hot water and spraying it in the bathtub until the nozzle is clear.

If using the sprayer saturate the entire carpet with the recipe, let dry for about 24-48 hours and vacuum. You will have to probably repeat the procedure again. Where heavily saturated with old urine it may take 3 applications over a week.

Also, if the cat urine is old and dried, the smell will probably be worse a day or two later. This is because you are rehydrating the uric acid crystals in the urine to neutralize them. The smell will get better with each application.

I hope this helps!

Tabbi