Once that’s finished, clean any additional debris with a sponge or washcloth and some soapy water. Clean the entire wet section with the brush. Illusions PVC Vinyl Fence Photo Gallery Backyard fences Don’t use harsh chemicals it’s not necessary to use harsh chemicals to clean your vinyl fence. How to clean vinyl fence panels . It’s nice to know that vinyl fence is strong enough to be able to withstand cleaning with a pressure washer as you’ve mentioned. To ensure a truly clean vinyl fence, allow the detergent to. Have the kids left their mark on the white vinyl fence? Clean from the bottom of the fence to the top, working in small sections. Stand a few feet away, set your pressure washer to a low setting, and slowly spray the fence. To clean a vinyl fence with a pressure washer, start by rinsing the fence. You do not have to scrub every inch of the fence! Vinegar kills mold and mildew and slows its return. Here are some tips for the best methods to clean your viny...