When used properly, these condoms for men are very efficient contraceptives. These condoms are regarded as a pregnancy control strategy with barriers. It is actually a thin shield of some sort that is worn on an erect penis. In order to prevent leaks, it is put on before sex and removed right away. When a person wears a condom, sperms are prevented from touching the vagina because they are caught in the condom's tip when they ejaculate. Every time you have sex, a new condom must be used. The Federal Drug Administration reports that the usage of male condoms as the only method of contraception has decreased to a pregnancy rate of just 3 to 14%.