,’Microsoft YaHei’;”>Condoms are very common contraceptives. When you use condoms, you must not only check the expiration date, but also use the correct method. At the beginning of the same room, you need to wear condoms instead of ejaculation. Use it only when you need to. Otherwise, the condom will not be fully effective, and it may cause contraceptive failure, which may lead to unintended pregnancy in women.