"It may be more expensive than other female OTCs, but it's more effective and lasts longer." -Stephanie 1/7/11
Today Sponge is 89-91% effective. In clinical studies, about 1 out of 10 women (9-11%) got pregnant during the first year of use when using this product correctly all the time. The possiblitly of getting pregnant increases to about 1 out of 7 women (13-16%) when this product was not used correctly.
Summary of Clinical Efficacy Study:
*McClure DA. "Worldwide method effectiveness of the Today vaginal contraceptive sponge." Adv Contracept 1985; 1:305-311.