I have only had time to use the product one time. But I do like the ease of using it. I could not get all of the spots off of my shower doors. Don't understand why. Was dissappointed about this. If anyone has an answer to this please let me know. I had a problem with how to use the attachments and the book was no help. I called customer support and was very pleased with the guy that answered my call. He was very nice and very helpful. He answered all my questions. Maybe after I use it some more then I can give it 5 stars. Customer support has been very helpful about helping me to choose the right products that I needed.