Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to neutralize dog urine odors [title] Run a wet and dry vacuum cleaner over the affected spot. [step] Using the vacuum, suction all of the urine from the carpet or flooring. Doing this will help to prevent the urine from getting absorbed into the carpet or flooring's deeper layers.

Ending1: Let the wet and dry vacuum run over the fibers of the carpet in large sections. [substeps] Make sure to suction only the stained portion, and not the carpet itself. Ending2: This residue also helps to break up any dried mucus and other buildup. [substeps] Contact your vet and ask if you should use one of these vacuum cleaners. Ending3: Urine that has been absorbed into the deeper layer will create an odor that will be very hard to get rid of. [substeps] If you do not have a vacuum cleaner, lay several sheets of newspaper or paper towels down on the spot. Ending4: [substeps] Alternatively, you may do a quiet " rinse " cycle, in which you run a cold and wet vacuum along one whole wall of the treated area. Vacuum over the stain as closely as possible using the hose, and rinse it away with warm water.

Answer format: ending1/ending2/ending3/ending4