The one thing that drives me mad about gutter vacuuming is when your poles get jammed together on a job and you can’t get them back in the van without breaking a few. I always keep them clean as I know grit in the joints can jam them together somehow. Yesterday I was vaccing a gutter over a kitchen extension so my poles were near enough horizontal, put them on the ground and 4 sections were jammed! Spent 20 minutes flushing them with a hosepipe, then drying each joint and finally twisting to get them apart. I have got multiple sections though that iv had to break on the job just to get them back in the van and cut down at home