All my customers are on 4 weekly, its the most straight forward frequency where you need minimal customers for a full round.
I agree 4 weekly is the best for building a round.
However a lot near me do 2 weekly trad with a fair few 4 weekly as well, £4 for a 3 bed semi is not uncommon on this frequency.
I know a lot of custies dont want 2 weekly cleans.
I'm hoping by offering 6 weekly I'll be able to charge more whilst at the same time lowering their annual WC bill.
With the added advantage of cleaning cells, doors & frames.