The Sponge

The sponge is a soft, polyurethane dome-shaped pillow that fits over the cervix. It blocks sperm from entering the cervix and contains nonoxynol-9 spermicide. It has a polyester loop that is used for removal. The sponge is only one-size and is an over-the counter product. It has been off the market since 1995, but was re-approved by the FDA in April 2005. According to the manufacturer, the sponge should be available in stores in late September.

Effectiveness

80-91% (for women who have never given birth)
60-80% (for women who have given birth)

Advantages

Can protect against pregnancy for up to 24 hours no matter how many times intercourse occurs
Virtually no health risks associated with its use
Causes no physical or hormonal changes in a woman's body
Does not interrupt spontaneity of sex

Disadvantages

Irritation due to nonoxynol-9
Does not provide STI protection
Using the sponge (especially if it is left in too long) slightly increases the risk of Toxic Shock Syndrome

How to use the sponge correctly

Remove the sponge from package and wet it thoroughly with tap water. Squeeze sponge to activate spermicide.
Insert the sponge with dimple facing the cervix and the loop hanging downwards. The sponge must stay in place for 6 hours after intercourse, but can stay in for up to 24 hours.
Remove sponge and dispose of it.