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Monday, November 30, 2015


I am trying to eliminate cat odor from an upholstry couch cushion. I have tried the oxygenated cleaner, but still have an odor.


The foam inside a farbic-covered cushion is extremely difficult if not impossible to properly clean, deodorize and sanitize. If the cushion has a zip off cover, replace the foam. If there is no zipper, you may want to take the cushion to an upholstery shop and have the foam replaced and then have the fabric cleaned and deodorized. If the fabric is available it may be easier and cheaper to have an upholstery shop recover a new cushion for you.
Other possible cleaning/deodorizing methods to reach the affected area of an open cell foam cushion include: injection, saturation and Ozone treatment.
Injection requires inserting a hypodermic syringe into the contaminated area and injecting approx. 3 ml of an odor counteractant treatment into each square inch of foam. The injection solution should be a high quality protein enzyme, formulated for urine odor removal. Then, re-clean the fabric and place in direct sunlight for 8 hours.
Saturation requires pre-testing the fabric with the enzyme solution (for colorfastness) and then applying approx. 8 oz. to the entire cover fabric. Then place the cushion in a plastic bag for 8 hours. Twice during the soak cycle, carefully step on the bag/cushion to decompress the individual cells, allowing absorption of the enzyme through the entire cellular structure of the foam. When finished, re-clean the fabric and place in direct sunlight for 8 hours.
Ozone requires a low volume unit with an in-depth understanding of safety and environmental measures. Place cushion inside of a plastic bag with the ozone unit for 2-6 hours. Cushion must be totally dry. Step on bag periodically to deflate foam and increase absorption. Finally, air out and re-clean fabric. Some foams may be damaged by ozone, proceed with caution and monitor closely.
Lastly, cross your fingers and hope all your efforts actually removed the urine odor.
Gary Clipperton
National Pro Clean Corp
(719) 598-5112