How to Put on a Condom It's National Condom Month. Condoms are pretty cheap, at most pharmacies, and when used correctly, highly effective at preventing pregnancy and sexually transmitted infections. If you always use one Safer Sex Education: How to Put on a Condom How to Use a Condom (with Pictures) wikiHow How to Use Condoms Correctly As we close out this year's #NationalCondomWeek, we want to leave you with a few key pointers to ensure your condom use keeps you at the top of your game. 1. Always