The Potential Dangers of Pressure Washers

Pressure washers are great for summer cleaning projects, but with the power of a pressure washer also comes potential danger.
3:18 | 07/27/16

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Transcript for The Potential Dangers of Pressure Washers
All right, "Gma on the lookout." Summertime and lots of homeowners using power washers to clean anythings outside their house but there could be a hidden danger. Mara schiavocampo is in north Caldwell, New Jersey, with more. Good morning, Mara. Reporter: Lara, good morning. Power washers like these are very popular in the summer. Used on everything from concrete to even your barbecue grill but experts warn that they are much more powerful than your typical garden hose and they could lead to serious injury. Pressure washers can blast through many summer cleaning projects but with all that power can come danger. Almost the whole top part of my knuckle off. Reporter: Ben skydell makes a living working with outdoor tools. Pressure washers can cause a lot of damage. Reporter: So much damage 6,000 people went to the emergency room in 2014 with pressure washer related injuries. A portion of those attributed to powerful spray. Most consumer pressure washers come with different noddles for increased water pressure depending on the job. This nozzle is 40 degrees. This is 25. And this red one is the most powerful at 0 degrees. The red nozzle so potentially dangerous, "Consumer reports" issuing a safety alert. We don't think power washer manufacturers should even be including a zero degree nozzle and we are asking that the industry actually take them out. Reporter: "Consumer reports" showing "Gma on the lookout" how in a matter of seconds these red nozzles can cut through a carrot. If that's your hand what kind of injury is that going to cause? This will definitely slice through your skin. Reporter: And even if you're wearing shoes. So if your feet were in there, would not be good. Reporter: Manufacturers warn consumers when you buy a new pressure washer, but what happens when you rent one? We went undercover to three tool rental stores in New Jersey to see if they come with that red nozzle and if we're warned about the potential danger. All three stores gave us a quick demo. They all came with the ability to spray zero degrees and only one warned us about the potential danger. Don't use T red one. The red one is too strong. Reporter: Two are warnings that said they could cause severe injury. We reached out to all three businesses and said their paperwork warns customers of potential dangers. The cleaning equipment trade association tells us the wand lengths make it difficult to direct the discharge stream at yourself and the warning instructions state to wear eye protection, hold spray gun with both hands and do not direct discharge stream at people along with other warnings. All right, so you see I have my stylish safety goggles on and important to wear sturdy shoes and we'll show you exactly why. Yon is here from underwriters laboratories. He is going to show us what this can do to a flip-flop. How it's going to slice right through it. If you wear open toe shoes like that, definitely not a good thing. "Consumer reports" is actually asking manufacturers to remove those red nozzles altogether and point out you can still get the same cleaning job done without them. It'll just take a little more time but it will be much safer, Lara. Wow, that visual tells a story. Thank you very much.

This transcript has been automatically generated and may not be 100% accurate.

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