Sprinkle 4 cups of baking soda across the surface of the mattress. Allow the baking soda to rest on mattress for 24 hours to help remove deep-set odors. Vacuum the baking soda off of the mattress using a hand-held vacuum or hand-tool attachment.
Remove the polyurethane smell from a new Tempur-Pedic mattress by sprinkling 2 cups of baking soda across the surface of the mattress and resting the mattress vertically against a wall. Place a fan directly in front of the mattress, and turn the fan on high. Allow the mattress to air out up to 24 hours. Vacuum the baking soda off of the mattress using a hand-held vacuum or hand-tool attachment.
Remove strong odors, such as urine, from the mattress by lightly spraying the surface of the mattress with warm water; do not drench the mattress, but rather dampen the surface. Sprinkle 2 cups of powdered borax directly on the mattress. Allow the borax to soak into the mattress for 5 hours.
Vacuum the water-borax mex off the mattress using a hand-held vacuum or a hand-tool attachment. Make sure the borax is completely removed from the mattress, as it can cause skin irritation.