The results of a survey conducted among local maize traders, showed that undried wet maize (moisture content over 20%) was widely distributed throughout Thailand (more than 50% of total maize traded). Wet maize became readily infected with A.flavus. Aflatoxin problems in wet maize could be resolved by prevening A.flavus infection for the initial seven to ten days after shelling. The use of alcohols was effective in inhibiting the growth of A.flavus. Hermetic storage of wet maize in plastic bags was a simple but the most practical method to prevent aflatoxin contamination of Thai maize even in local areas.