Condoms generally have a shelf life of five years, but there are special condoms, such as those with added spermicidal drugs, that may also have a three-year shelf life. Condoms are effective, easy to use, and can effectively protect women from AIDS and other attacks, and have become the most widely used form of contraception. Usually it is best to put the condom in a cool place, avoiding light, so as not to cause the condom to become sticky, brittle, affecting the use. In addition, it is recommended to use regular manufacturers of condoms, the quality is guaranteed, if you use poor quality condoms, easy to have broken, can not play the contraceptive effect, some are also prone to cause local allergies and other symptoms. Note that when buying condoms, it is best to look at the date of manufacture, so as not to expire condoms, affecting the use. If you don’t want to get pregnant, it is best to take the whole condom contraception, and to check to avoid rupture after use, to ensure the use of the effect.