Barrier methods of birth control prevent sperm from getting into the uterus. Examples of barrier methods include male and female condoms, sponges, and diaphragms. Spermicides are often used along with barrier methods to kill the sperm. In addition, condoms can help prevent STDs, so this method is recommended for safe sex. Follow the links below to find WebMD's comprehensive coverage about how barrier methods of birth control are used, pros and cons, and much more.