We have had customers call and request the same product at regular intervals and we are always happy to take your calls and answer your questions. However you now have an option when ordering to subscribe to a product at 1,2,3 or 4 month intervals. You will NOT be billed automatically but will receive and invoice and reminder at the requested intervals. This is to save you from remembering to call in and helps us keep the needed products in stock. If you have any questions please feel free to contact us!