The contraceptive sponge combines barrier and spermicidal methods to prevent conception.

First, the sponge is inserted into the vagina, so it can cover the cervix and prevent any sperm from entering the uterus.

Sponges can provide contraception for multiple acts of intercourse over a 24-hour period, but cannot be reused beyond that time or once removed.

[5] Sponges are a physical barrier, trapping sperm and preventing their passage through the cervix into the reproductive system.

People sensitive to Nonoxynol-9, an ingredient in the spermicide used in the sponge, may experience unpleasant irritation and may face increase risk of sexually transmitted infections.