I used it a few times and noted the problem, if you can call that, with the price of the refills. The truck that i used it on was prewashed at the local car wash and then I took it home to try. I was impressed with what it did and how easy it was to use. Has anyone tried a different soap to see what it does like the Mcgeyers of Amorall etc.? I tempted to just to see if will clean just as well and perhaps be a little cheaper.