This squeegee works well in clearing all detergent from the edges of the glass,what you won’t see if you work quickly is that they leave turn marks like you’ve been cleaning windows for 2 weeks.
If you clean windows the way they recommended you do with one you will actually become slower with a mop and squeegee IMO,you shouldn’t need to make it your life’s work to find out how to use something like a squeegee like Bob Hat had tried to do on YoiTube it’s not like he’s trying to convince people now is it lol. I found them to be useful for small panes cut to the size of the Windows that’s it,the daddy of commercial imo is still the wagtail slimline