Since November 1,1995, federal milk marketing orders that impact Wisconsin producer pay prices have been amended to implement multiple component pricing (MCP). Dairy producers shipping Grade A milk to a milk plant regulated under an order has been paid on the basis of three milk components—butterfat, protein and other solids (lactose and ash). Because of competition among milk dairy cooperatives and other milk buyers, most all Wisconsin dairy farmers are paid on the basis of these milk components. However, MCP programs do vary among milk buyers.