Apply the enzyme-based cleaner to the stained area by putting some on a rag and spreading it around the floor, starting around the perimeter and working inward.
Spread the plastic sheet over the entire treated area.
Take the plastic off after 30 minutes and dry the floor by blotting it with paper towels.
Treat the area with the cleaner again if the smell persists, using the same procedure in Step 1, but do not use the plastic sheet this time.
Mop up the area if the odor is gone. If the odor remains, perform another treatment with the enzyme-based cleaner.