A waste disposal system comprises a waste disposal unit, including a processor, a scanner, a network interface coupled to a network, and a remote processing system coupled to the waste disposal unit via the network. The remote processing system includes a database storing user sample preferences, wherein the sample preferences are used to select samples to be provided to the user, and instructions configured to receive scanned information from the waste disposal unit for a first item, determine from the received scanned information that the first item is a sample, receive an indication via the waste disposal unit whether the user wants to order a replacement for the sample, locate replacement options for the sample, transmit the replacement options to the waste disposal unit, and receive from the waste disposal unit an option selection by the user.