All 1x lawn mow services, and the 1st mow of any recurring service series must be pre paid. Subsequent services require a payment method on file, to charge directly after each service in an automatic manner.
This type of service is too small and occurs too often to be billed and invoiced after the fact and to be tracked as a receivable in a low cost manner. By the time the next service comes up in 7 days, the old bill is already past due. This causes too many timing challenges. When Lawns are prepaid, there are rarely ever financial issues because your account is always current. Or the services can be temporarily halted while small payment issues are being resolved.