The<unk>  combines barrier and spermicidal methods to prevent conception. Three brands are marketed: Pharmatex, Protectaid and Today. Pharmatex is marketed in France and the province of Quebec; Protectaid in the rest of Canada and Europe; and Today in the United States.<unk> s work in two ways. First, the<unk>  is inserted into the vagina, so it can cover the cervix and prevent any sperm from entering the uterus. Secondly, the<unk>  contains spermicide. The<unk> s are inserted vaginally prior to intercourse and must be placed over the cervix to be effective.<unk> s provide no protection from sexually transmitted infections.<unk> s can provide contraception for multiple acts of intercourse over a 24 hour period, but cannot be reused beyond that time or once removed.
Contraceptive sponge
Contraceptive patch
Contraceptive implant
Heat-based contraception
Male contraceptive
Spermicide
Vaginal microbicide
Contraceptive vaginal ring