Read this article if you're looking for comprehensive information about the diaphragm, the cervical cap, the sponge, and the female condom, and how spermicides are used in conjunction with them.
Barrier contraceptives are devices that provide a mechanical barrier between the sperm and the egg.
Examples of barrier contraceptives include the male or female condom, and the diaphragm. They are typically used with a spermicide to increase protection against pregnancy. Spermicides Spermicides are sperm-killing substances available as foams, creams, or gels, and are designed for insertion deep into the vagina before intercourse. The active ingredient is nonoxynol-9, which attacks the surface of the sperm cell. Spermicides are usually available without a prescription or medical examination.