The producer, before the effective date of the policy, shall deliver written notice to the prospective insured disclosing the relationship between the producer and the controller insurer; except that, if the business is placed through a subproducer who is not a controlling producer, the controlling producer shall retain in his records a signed commitment from the subproducer that the subproducer is aware of the relationship between the insurer and the producer and that the subproducer has or will notify the insured.