The contraceptive sponge, which contains spermicide (a sperm-killing ingredient), is worn inside the vagina. It was once a popular form of contraception in the United States. It went off the market temporarily but become available once again in 2005. The sponge is available over the counter without a prescription.
The only brand available in the United States is the Today contraceptive sponge. It is effective as soon as it is inserted. It can be inserted up to 24 hours before sexual intercourse. It must be left in place for at least 6 hours afterward.
The sponge is about 90 percent effective in preventing pregnancy when used alone, and up to 98 percent effective when used together with a latex condom.