For example, maybe the manufacturer demands an entire package panel, but you are not willing to sacrifice the box which houses your new camera. Some stores display them with the product, others post them collectively at the check-out counter, at a central bulletin board or at the service desk.
Many manufacturers demand the original sales receipt.
If so, make a photocopy to keep for your records. Many times, the consumer simply fills in the rebate form and mails it with no record of the address to which it was sent. These houses may set up specific post office boxes which are used only until the listed expiration date. Naturally, if you write after this date to complain about not getting your rebate check, you may get no response. Therefore, a full address is important, as well as the name and address of the manufacturer.