If you're getting some fall cleaning done before hanging the decorations and think it's time to pressure wash your home, Consumer Reports has a few recommendations.

It's easy to over-do it with a pressure washer. After all, they can chip paint, dent wood and even etch stone. Consumer Reports recommends getting rid of the zero degree nozzle.

"We think zero degree nozzles pose a totally unnecessary risk. So, if you buy a pressure washer that comes with one, we suggest throwing it out," said Paul Hope.

Consumer Reports added you should never pressure wash your roof.

Hope said, "It's dangerous. The kickback could cause a ladder to fall backwards. Plus, you end up doing more harm than good to the roofing shingles."

Here's what you CAN you clean with a pressure washer. Wood and siding made of vinyl and fiber cement can typically hold up with pressure washing. But, you should use caution with Aluminum siding.

"Aluminum siding can actually be easily dented so if you're going to try to pressure wash it start on the gentlest setting then work your way up," Hope explained.

Cement and asphalt walkways and driveways can stand up to the power. For moldy mildew use lower pressure and some suds. To tackle grease stains you'll need a finer, more targeted stream.

Home Expert Tom Garcia suggested pressure washing your house once a year. He added, more pressure doesn't mean a better wash. Low pressure with a non-bleach cleaning product is the best way to go for your home machine. And always wear goggles and close toe shoes.