Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to use paver sealer [title] Clean your paving stones. [step] Clean your existing pavers by sweeping them and rinsing with water. [title] Remove existing stains.

Ending1: [step] If your existing stains are on your existing pavers, you may want to remove them. You'll need to clean your existing stone before you apply the sealer. Ending2: [step] Remove as much mold or cement as possible from your newly surfaced stones. You will be able to spread the mold and cement around easier if it has been pre-sealed. Ending3: [step] If any stains have formed on your paving stones you can typically remove them using a solution made of water and detergent. Soak your rag and scrub to remove the stain. Ending4: [step] Minor stains such as coffee or food stains do not require a professional grout job. [title] Replace cement and concrete as they get dusty.

Answer format: ending1/ending2/ending3/ending4