This approach to prevention will work best if it is designed with an understanding of the conditions under which individuals decline to comply with risk-reduction guidelines, such as the use of drugs and alcohol during sexual contact. Three prevention strategies to minimize HIV transmission related to the use of drugs and alcohol during sexual activity among gay men are: (1) providing easily attainable condoms in gay bars; (2) training bartenders in "server intervention" so that they can "cut off" inebriated patrons; and (3) changing the social environment in which risk occurs. It is hoped that this approach might also be adopted to develop prevention strategies for other populations at risk of HIV infection. 7 notes. (Author abstract modified).