I have the Ryobi $100 pressure washer that I have used to pressure wash my fence, house siding, deck etc... It has done a fantastic job on everything. My back fence is covered by overhanging forest behind it and is always densely shaded. It gets nasty with algae and tree drippings. The power washer always brings it back to looking like new wood with no solvents or chemicals. When it stops working, I'll just buy another one. For $100 the powerwasher is almost disposable. However, this one has hung on for years. I know that they have made changes, as mine is many years old, but for $100 you can't go wrong.