DON'T store condoms in a hot place.
DO keep condoms in a cool, dry place
DON'T use out of date condoms or ones whose packaging is torn or damaged.
DO check the expiration date. Old condoms can be dry and can break more easily.
DON'T use scissors or your teeth when opening a condom--you might tear it.
DO open condoms with care.
DON'T try to put a condom on before the penis is erect (hard).
DO put the condom on an erect penis before there is any contact with a partner's genitals.
DON'T use oil-based lube with latex condoms. The oil can cause latex condoms to break.
DO use a water-based lube with latex condoms.
DON'T flip a condom over and reuse it if you put it on the wrong way. Throw it out and get a new one.
DO throw out a condom after you use it. Never reuse a condom.