Ive lost about 20 since I started mowing 1 year ago, started business in august 16th last year with 0 customers and no experience mowing... learning how to drive the z was the hardest especially it being a 52" and most my properties being about 5000 sq feet, at the moment im almost at my goal of 100 customers for the first year. Im sure with alot more advertising id triple that. As for the lost customers, well its my first year and ive made mistakes which is where I lose customers. simple things like skipping the lawn because in 1 week it grew just half inch and they wanted it cut regardless. The biggest reason people have quit on me is for skipping a week when I thought it didnt need cut, I think I will just need to cut it regardless.