[This review was collected as part of a promotion.] I realize that winterizing is an important when it comes to pressure washers, and was really hoping that this would be as easy of a task as Karcher's instructions would indicate: 1) Attach hose securely. 2) Depress button to dispense fluid. 3). Release button when fluid exits water outlet. Unfortunately, I had a terrible time with this product. Here's why: First, when I was connecting the spray tube to my pressure washer, the gray plastic piece became disconnected from the hose and wouldn't go back on. I was finally able to get it reconnected, but only in a way that made the connection less secure than it should have been. Second, nowhere in the instructions for this product does it mention that you should only use it outdoors. It's December and below 30 degrees here and I've got everything stored in my heated garage; I figured I'd use the product there. Well, it takes only a moment for the product to exit the water outlet. And when it exits, it does so with enough force to send it about 20 feet away. Across the garage, onto my stuff, and leaving a stain on my garage floor. What a mess. Karcher makes awesome pressure washers, but Karcher Punp Guard is garbage.

[This review was collected as part of a promotion.] Loving this pump guard for the Karcher pressure washer. We use our pressure washer weekly around the house and to wash our cars, so this is great for keeping everything lubricated and working properly. It's super easy to use and comes in a great little bottle which is eat to store.

[This review was collected as part of a promotion.] It's a great attachment for my pressure washer . Fits perfectly and works great ! Good pressure and since it's wide covers a wider area of cleaning unlike the regular ones that has one stream . The attachment itself is light weight and portable ! Can't wait to use it once the weather becomes better !

[This review was collected as part of a promotion.] Love that the ingredients are biodegradable. Running this through our pressure washer helps maintain the quality performance by lubricating the interior. It's easy even for someone with hand pain to hook up and run through. The bottle is sealed well and doesn't leak even if on its side so storing it is simple.

[This review was collected as part of a promotion.] I used the Kärcher Pump Guard Can to protect my pressure washer and the product worked as expected. The liquid has a clean consistency and leaves no residue inside the pump. It flows well through the system and helps prevent corrosion during storage. The scent is mild and not irritating. The bottle is easy to handle and the built-in applicator makes the process simple. It is a good option if you want to keep your pressure washer in good condition for long periods.

[This review was collected as part of a promotion.] This is great for spot cleaning smaller stains, or big stains on smaller areas. I attached this to my pressure washer to clean some stains on my driveway, it took just a few minutes. It easily attaches.

[This review was collected as part of a promotion.] The booster in power is noticeable right away. The spray is stronger and more focused than the standard nozzle. So tough dirt comes off faster and big areas take less time to clean. It snaps onto any electric pressure washer with 1/4” quick connect and up to 3000 psi. The setup is effortless.

[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.] When winter comes around the best thing you can do for your Karcher pressure washer is run pump guard through the system. This prevents freezing and failure due to seizing from water sitting and corroding. This product is easy to use and has a powerful spray to force its way through the system. I highly recommend and will continue to use it through my pressure washer.

[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!