When I started back in 2005 I made the decision to offer 8 weekly cleans as standard...
It obviously took longer to build the business, but in the long run it's been worth it as I've been able to charge more per clean.
90% of my customers are 8 weekly - I have some 4, 6, 12 and 16 weekly's to... These I just slot in around my 8 weekly customers when I'm in the area. I like it as it keeps my round flexible.
Andy