[This review was collected as part of a promotion.] Easy to use! Just screw it on and press the button. We'll have to see later how it works (it's currently winter). But, looking at other reviews it should keep the washer running for a while!

[This review was collected as part of a promotion.] I tried the Kärcher Pump Guard Aerosol 4oz can and I have to admit it was a whole lot easier than I thought it would be! I didn't think I would really need it as I live in a fairly warm climate, but we do have a lot of mineral buildup and in the winter we definitely get some cold temperatures at night so I figured I may as well do the recommended care and maintenance of my pressure washer! The formula is designed to help lubricate and protect the pressure washer from rust and corrosion. It's a bit ironic as I was delayed in trying this because some of the mineral deposits had started to harden around the inlet, making it very difficult for me to remove the hoses. I finally got those off and now I have a greater appreciation for how this works! The sprayed itself was incredibly easy to attach to the inlet, and the container was light with an easy to push distribution button. Huge bonus with something like this, it's a biodegradable formula. If you live in a cold climate, it also works as an antifreeze protection. It is personal and that it is able to be used with both gas and electric pressure washers. I really thought this would be a lot harder than it was. It was actually incredibly easy!

[This review was collected as part of a promotion.] My Karcher pump guard can truly helped me prepare this Karcher power washer for the winter months in Montana. It was easy to utilize and easy to assemble when I needed it. I was able to quickly winterize my washer and protect it until next season!

[This review was collected as part of a promotion.] Screwing on the hose assembly was easy and quick. The whole process took about 2 minutes and now my power washer is protected from the cold weather.