Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to remove dog urine [title] Soak up the urine. [step] Place a thick layer of paper towels and newspapers on the soiled area. Press or stand on the paper for a few minutes, allowing the liquid to be pulled out of the carpet.

Ending1: This will remove any mud and sawdust. Leave the newspaper to soak up the urine for a few minutes without wetting the newspaper. Ending2: The liquid should be too thick to pour out without spilling. [substeps] Depending on the severity of the dog's urine, may take several hours or even several days to fully soak up. Ending3: [substeps] After you've soaked up as much urine as possible, leave the soiled papers in your dog's bathroom area. For example, place the papers right outside in an area of your yard that your dog normally urinates. Ending4: You don't need to use a bucket or your hand to do this. Rather, you simply squeeze or drop a bit of the urine into the paper towels.

Answer format: ending1/ending2/ending3/ending4