I used it on one window out of 8 I had to do. It did not glide as in the video fell off several times so I just tossed it out. Don’t waste your money.

The condo I recently bought had incredibly dirty dual-pane double-hung windows that are not too accessible to clean from the outside. Plus, there is a full screen on the outside of each window. I am really pleased with the results! I was able to clean each of the bottom sashes very well, and most of the top sashes too (these had more 'screen burn' on them). What a huge difference -- for the most part, no more fogginess! Things I learned: I ordered the blue version (.3"-.8") based on my window thickness, and am so glad I didn't order the one with the strongest magnet -- I never would have been able to move the Cleaner across my windows! As it was, there were times when I had to exert a lot of force to move it. As long as the top sash can be pushed or pulled down a few inches, you can reach over the top of that sash to get the outer half of the Cleaner positioned on the outside glass at the top (make sure to push most of the string over the top too). Then place the inner half of the Cleaner on the inside, push the sash back up to the top, and clean. Since I couldn't spray the outside of the top sash with a cleaning liquid, I saturated the cloth and used it on the Cleaner instead. There were times I had to move the Cleaner up & down or side-to-side, instead of moving in an "S" -- that worked too, especially along each of the sides & corners of the windows. I found using the Glider a great alternative to hiring a professional window cleaner! While I might have been able to get outside access to the windows on the first floor, there's no way I could have done the second floor. And, I would have needed to remove all the screens. Thank you!

Bought strongest version. Large skylight had not been cleaned in 4 years. Used vinegar and water. A smooth dry cloth on inside makes it easier to slide on outside. Skylight now spotless. Well worth $78

Love this product. It is easier to use this then trying to take the windows out of their frames. They are heavy and this worked easily without having to remove the full window screen. Thank you.

I really wanted this to work but it only cleans 1/2 of either slider or double hung windows. Also it kept Dropping & even though there is a string it hampers the project. The magnet is very strong & unfortunately I got my fingers caught several times despite the warnings on the product. I think the idea is good but needs some kind of extension to be able to reach top of windows.