Once a product is created and used for its intended purpose, it is natural to discard it and the by-products created by its use. But, if other uses can be found for the discarded product or by-products, the cost to produce the product can be spread out over its use and its reuse. As environmental issues concerning disposal of materials become more critical, organizations will be reassessing the costs associated with throwing away materials. Many times, recycling will be found to be a cost-effective alternative. Design engineers in most manufacturing companies are learning how to "design for disassembly." The ease of destruction of a product is becoming just as important as the ease of construction.