I saw your product mentioned in the Las Vegas Review in one of their home and garden sections. I used your Bring-It-ON for my family room window which was encrusted with scale from our sprinkler system. I hoped it would work because I had tried all the traditional remedies without success. Frankly, I did not expect the product to work real well but would have been happy if it just helped. In fact, it cleaned just as you said it would. It wasn't even hard work. Too bad all products you purchase don't work as well as this one. I am buying these two packages for family members. Thanks for doing what you say you will.