Get all the dirt off everything on the first clean, and charge accordingly...
then its a doddle every month, and you know you have got all the dirt.
leave them top frames ,and you will forever have to make sure no water ever touches them!!
Because it will drip down as dirty water on to the glass when you have gone.
Spend a little time on the first clean , get everything off, and be proud that you do a good job,
my customers always comment on the frames being lovely and clean....
i sure would not like them to look up and see one dirty bit of frame,
whats the point in that?
Get it done right cock !