Ethyl carbamate (EC) is an organic compound once used as an antineoplastic agent and as a solvent for delivering analgesics to humans . When EC was found to be a pneumotoxin and carcinogen in laboratory animals its general use in human medicine ceased in the mid-1970's. In 2007 it was classified as a human Group 2A carcinogen by the International Agency for Research on Cancer . In the 1980's EC was discovered to be a common contaminate of fermented spirits and foods and many countries established maximum limits for safe consumption . There is renewed concern about ethyl carbamate being a food and environmental toxicant . EC has several formation pathways. In its simplest formation it is the result from the reaction of ethanol, urea, heat, and time (Figure1). For over 50 years the co-products from the distilled beverage industry have been utilized for livestock feeds. During the past 3 decades there has been a dramatic increase in the production of distillers grains co-products with the increasing use of ethanol as a renewable fuel. The primary co-products utilized in animal feeds are condensed distillers solubles (CDS, syrup), wet distillers grains with solubles (WDGS) and dried distillers grains with solubles (DDGS) . These co-products come from the fermentation of various grains such as corn, milo, and wheat for the production of ethanol. A condensed schematic on the production of these co-products is illustrated in Figure .