Home Double Side Magnetic Window Cleaner Ultra-Strong Both Side Glass Surface Cleaning Brush Wiper Tools with ergonomic handle design for High-rise and Car Glazed Windows Thickness (8-15mm)

This does a good job, but it's not easy to use- definitely do your research first to make sure you're using it properly. The instructions that came with it are almost useless, but I watched some YouTube videos and read some reviews and it works really well. My windows look absolutely amazing! But my heart is in my mouth when I'm using it as it always startles me if it falls off, and it squeaks loudly which makes me nervous about scratches. I bought the highest strength one for my double glazed windows- I was scared it would be too strong, but it's definitely not - it's just the right strength. Some tips I've learned from others in my research that worked well for me:1. Make sure you have plenty of suds so it glides over your windows and doesn't scratch2. I practised first with just the indoors side on a mirror.3. Press the indoors side onto the inside of the window first, then place the outside section on the outside of the window, but slightly above where the indoor section is. Then gently move one side up/down to meet the other and they'll gently latch together.4. With the arrow head facing upwards, wipe from side to side and from the top down first, to clean. Then go back up to the top right corner and point the arrow head to the left and move the device towards the left, then when you get to the edge turn it so the arrow is pointing down, move it down to the next section and then move it back to the right again, carrying on with this down to the bottom (working in arcs works well too)5. If you're carrying both sides at once, carry them in separate hands. They absolutely can get your skin or finger stuck between due to the strong magnets.6. There will be a small spot in the top corner that the device can't get to. It's just a small downside for the benefits of using this convenient device.7. Occasionally if I lose concentration and start moving too fast and not smoothly, the outside bit does fall off. I always make sure the cord is around my wrist and only allow the necessary length of cord outside the window to allow me to reach the furthest area of the window, to make sure it doesn't fall further than necessary if it does come off.Despite needing some extra care when using this device, I would definitely recommend it for high up windows where you would otherwise need a ladder / hire a professional to clean them. It does a great job.

I read lots of reviews of the different magnetic window cleaners and decided that I didn't want to pay for for cloths, bags, gift boxes, etc. I just needed something to help me clean my velux windows. I measured the thickness of the double glazing and found they were all 28mm, which apparently is fairly standard in the UK, so I bought the 20-30mm model.Another reason I chose this was for the separator that goes between them when not in use. Other didn't have this but gave you a lever to prise them apart instead.As everyone says, the magnets are powerful! With the separator it is easy to twist them apart.They come with a couple of spare pads and squeegees. I soaked them in warm water with a bit of stardrops in it. I was a bit nervous of putting them together on either side of the glass as I imagined they could smash together so I tried sliding them together. This didn't work very well because in some positions the magnets repel each other, it was fine just putting them together as instructed.My windows were VERY dirty! I had to go over the glass several times to get the worst of the grime off. The squeegees work quite well but it is difficult to get a completely clean window with just them. This wasn't a problem for me as the main thing I wanted was for the filthy water to run off into the roof rather than into my rooms which happens normally when you rotate the window to clean it. The string was a bit of a nuisance sometimes, getting under the pad or the squeegee, but as I got better with the tool it was less of an issue. The pads got very dirty, but this rinsed off well. The main limitation is that you can only clean where you can get the inside handle to. With the velux window this left about 3-4cm top and bottom uncleaned. That wasn't an issue as I could clean this with the window rotated, and it certainly saved a lot of splashing and dropping dirty water into my rooms. It is a well made tool that requires some practice. Like all tools it's only a good as the tool that uses it!

See my latest update at bottom of page. :-(Was sceptical and thought id probably end up returning it. I put off buying this for months because if bad reviews. Have a window above a conservatory so can't get to it from outside even with a long pole. Tried it today on filthy windows with a strong mix of hg cleaning fluid which i already had. It's quite juddery but it actually works. Windows were filthy so not a perfect finish on first attempt. Will try again at weekend and report back. Dropped the outside bit once when rushing but the safety string did its job. Only reason for 4 stars it's because it's like having dynamite in one hand and a lit match in the other. Just remember not to let them touch as per the other comments. My glass has a 28mm gap and i got the purple one. I think the strong cleaning fluid solution probably helps lubricate the motion. Im fairly optimistic about this gadget.Update: when just using pure water without the hg cleaning fluid it kept falling off the window. Also it doesnt get stubborn marks off that have been there ages (er, like 6 months) but still does a good job. Needd a towel or something to finish off the last corner where you stop. Would recommend, with those caveats.New update 21/11/21: sunny morning and spotted the glass has long scratches on it. Not happy. So despite all my other positive comments I have changed my rating from a 4 to a 1. Can not recommend.