This pump sprayer is great. It holds pressure for a long time which means minimal pumping. The spray is strong to pre-soak the panels during a rinseless wash. Like to foaming pump sprayer, I would like to see Marolex adopt an air valve to not manually pump as much. A good quality product.

I've only used it one time so far--just a test with tap water. But I like it. Has a good strong spray. If you lock in the button for a continuous spray, you will need to pump it a few times every few seconds or your stream will get weak very quickly. It's going to be great for spraying the car with rinseless wash. For us apartment dwellers who don't have the luxury of a hose, this sprayer may be a very useful tool. Sure beats a spray bottle with a trigger.