Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to seal and stain pressure treated wood decking [title] Remove staining, mildew and old finish with a commercial deck cleaning solution. [step] Pressure washing is almost always a must on older decks, but be sure not to use too much pressure. You can damage the wood if it's turned up too high.

Ending1: [title] Scrape away old finish with a rake. [step] You can add wood putty to the first few inches of wood to make it easier to remove old finish. Ending2: A continuous stream of water, or a powerful jet air stream, will blot away too much staining or warping. [substeps] If you have a full deck, wet a cloth and wipe down the entire area thoroughly. Ending3: Similarly, you can rust the wood by using too much grease. [substeps] Once the stain has dried to the level of rust on all sides, scrape the stain with a deck scraper, tenderizer, or similar tool until it is off. Ending4: Usually 1500-2500 psi is adequate for pressure treated lumber. Stay between 1200-1500 psi for cedar and redwood.

Answer format: ending1/ending2/ending3/ending4