Fill a spray bottle with cold water. Liberally spray the upholstery to rinse out the pet odor and traces of old cleaners.
Vacuum the furniture thoroughly with a wet vacuum--one designed specifically to deal with wet materials. Extract all the moisture from the upholstery with the vacuum attachment. Operate the vacuum according to the manufacturer's instructions
Spray a small amount of high-quality pet odor neutralizer onto an inconspicuous area of the furniture. Pet odor neutralizers destroy animal odors on contact, instead of temporarily masking them. High-quality odor neutralizers contain enzymes that break down acid molecules in pet waste particles and completely eliminate odors.
Inspect the upholstery for damage or discoloration from the neutralizer. If no damages occur, spray the neutralizer generously over the affected area. Follow the manufacturer's directions on the product label. Allow the neutralizer to dry on the upholstery.