If you don’t want to chip, peel, or otherwise damage the stain or paint, avoid using a pressure washer on stained or painted surfaces. RELATED: 11 Mistakes Most People Make with a Power Washer 8.

If you've got a car engine, gutters, an old shed, or driveway to get clean, save $191 on the powerful, top-selling PowerSmart DL1034A Pressure Washer at Walmart.

Painted surfaces tend to chip or even peel when cleaned with a pressure washer, so unless the aim is to remove the paint, it’s best to avoid targeting these surfaces.