Materials, products and services - the Green Guide Online provides details of the life cycle environmental impacts of construction materials and components, and the Green Book is a free online database of products and services.
Spermicides are used globally for birth control, with or without condoms. As the only means of birth control, spermicides are rarely effective. However, in conjunction with condoms, spermicides are somewhat effective in birth control.
Spermicide Alone. 82%. When used correctly and every time you have sex, spermicides alone are 82% effective in preventing pregnancy (over one year of use)*. When used correctly and every time you have sex, Today Sponge is 91% effective in preventing pregnancy (over one year of use)*.