The way I look at it is you have a window cleaner to keep your windows looking nice and clean.
If you like having clean windows why do you want them left dirty through the winter; referring to the leave til march brigade!
You either want clean windows or you don't.
For me it's just the fact that as a small business joe public thinks they can muck you about.
Try telling BT you don't want their service every month just as and when.
I just do monthly.
Have done different schedules in the beginning but found to difficult to manage
.
When I did offer more choice to the handful of serial "can't be a month already" brigade.
They all said happy with monthly.
![Huh ???](http://www.cleanitup.co.uk/smf/Smileys/classic/huh.gif)
I found when I started 9-10 years ago I bent over backwards for alot of customers trying to keep them happy offering different schedules
Don't have any of them customers now.
I find monthly works for me.