Toss your condoms... by the expiration date written on the wrapper.
The expiration date is usually no later than four years after the condoms have been manufactured, explains Dr. Kurtz. “Condoms tend to last, if you keep them in a cool, dry place. Otherwise, both latex and lambskin can break down, weakening their protectiveness, which can lead to unplanned pregnancy and an increased risk of STDs. But if you’ve kept your condoms somewhere too hot or too cold (yes, this includes your purse or wallet!), or their wrappers look damaged, replace them to be on the safe side." The best place to store your condoms, according to docs: Your nightstand drawer.