Let them sit for 15 minutes.

How to get urine smell out of foam cushions. Clean dog urine off couch cushions: Vacuum the foam cushions to remove any dirt or dust. How to remove urine odor from elderly clothes.

Use your hands to press and work the sudsy mixture deep into the foam. Place folded towels under the couch to catch the residues. Spray the mixture onto the stains on the cushions and let it.

Combine warm water with baking soda in a tub. Drain the tub and rinse the soap from the foam and polyester batting. Rinse and squeeze the foam.

Drain the tub and rinse the soap from the foam and polyester batting. Whether you're dealing with bad smells in memory foam or foul odor from couch cushions, getting a bad smell out of foam is much harder than practicing a few preventative techniques.