Harvard Health

Spermicide Condom Sponge Diaphragm and Cervical Cap. Condoms sponges and spermicides are available with no prescription in many stores. Barrier Methods Of Birth Control Northshore Barrier methods of birth control prevent pregnancy by blocking sperm. Barrier methods for birth control . The spermicide kills most of the sperm that enter the vagina. Barrier methods work better when you use them with a spermicide. For women who have given birth vaginally the cervical cap is 71 effective. What are barrier methods of birth control. Their maximum effectiveness is about the same as other methods. Different barrier methods of birth control are available for example spermicides male condoms female condoms contraceptive sponge diaphragm and cervical cap. Barrier Methods of Birth Control. The method of birth control varies from person to person and their preferences to either become pregnant or not. Barrier methods of birth control block sperm from entering the uterus.