Just a wild thought - you know the mild antibiotic ointments that you can put on cuts or blisters to help prevent infection (i.e. Bacitracin, Polysporin, etc.)? Would there by any usefulness in applying those products to the penis, other genital areas or even the tip of the urethra as a preventative measure after sex? Just as they prevent bacterial infections in cuts, will they prevent bacterial STDs?