The biggest problem is cleaning above vents, I'm getting a bit of work from a newbie because of this.
I can see the runs he's left on the glass while cleaning next doors.
How do you get round it?
I have a pole to which I attach a sponge wrapped with a damp microfiber, I run this along the top of all the frames
removing the dirt and spiders webs before cleaning the rest with pure.
Yes it means taking two poles out each time but the time saved by not having to rinse broken spiders webs off the glass
more than makes up for it.
Plus no crap on the brush.