so bird muck only appears every other month and customers are quite happy to leave it there for up to 8 weeks ?
Most of my customers are houseproud and want sparkling windows all the time , not wait for them to get dirty before they get cleaned.
I suppose its horses for courses, i do have some 8 weekly but most request 4 weeks.
I tell them I clean every 4 weeks and they can have any multiple of that, it is there choice and 95% want the 4 weekly.
I even have some at 2 weekly, which are pensioner bungalows, yet again there choice, i tell them they can have 4 weekly if they want , but they stick to 2,
I clean shops weekly
I clean a department store 3 times a week and once a week inside.
I clean about 100 business and they all request between weekly and monthly, very rare do i have any request longer periods.
I Clean a few schools at the start of each term , thats approx every 4 months, everytime i go to clean them they are black.
dave