E-mails or other electronic means of transmission have the same legal effect as the service of an original signed copy of this agreement. Customer understands that Contractor may terminate the Agreement at any time if Customer fails to pay for services provided under this Agreement or if Customer violates any other essential provision contained in this Cleaning Service Agreement. The customer agrees to pay all remaining balances within _____ days of termination. A cleaning contract should be as detailed as possible. If something is omitted, it can be difficult to prove in the event of an argument. All oral agreements must be recalled in writing. If additional service is required, a new service contract may be required. As a general rule, a cleaning contract contains a provision that, in the event of a modification, both parties must agree in writing. Offering a properly drafted legal document assures your potential client of your professional credentials and ensures that you are legally protected in the event of a payment dispute.. .