There are current strategies that show evidence of reducing underage drinking.

There is evidence that communities that combine public information, training for servers, and enforcement of MLDA-21 laws can have an effect on underage drinking by reducing alcohol availability. An evaluation of a multi-community program entitled Complying with the Minimum Drinking Age (CMDA) demonstrated significant reductions in sales rates to youth due to enforcement checks (Wagenaar, Toomey, & Erickson, 2005). Communities Mobilizing for Change on Alcohol (CMCA) have shown evidence of the effectiveness of enforcement programs and efforts in reducing the consequences of underage drinking (Wagenaar et al., 1994; Wagenaar, Murray, & Toomey, 2000). A Community Prevention Trial to Reduce Alcohol-Involved Trauma that combined community mobilization, media advocacy, responsible beverage service training, and enforcement showed evidence of reducing sales to underage, underage drinking and driving, and underage injuries (Holder et al., 1997).