pen and paper for me.mind u im a sole trader with 350 custys.income and expenses book,work day book and diary that i fill in at the end of every day of what custys ive cleaned so i know when their due again.work book has custys ive cleaned,whos paid,who owes 2 wks etc.works very well.has done for 15 yrs.ive got no reason to change.most of my custys are monthly and a few bi monthly,a few 6 weekly.likes already been said if it aint broke,dont try and fix it!i dont clean on a fixed day,always roughly about 4 to 5 wks or 8 to 9 wks .i have a few bigger accounts that i fone the day before for access etc that are usually bang on time and vary the compact 3 bedders to roughly the same time.taking into account bad weather,poor motivation{like today!},taking girlfriend to hospital etc.
best wishes to everyone
dazmond