queenhearts answered Sunday March 16 2008, 8:59 am: Spermicides are chemical products that "kill" sperm to prevent pregnancy. They can come in foams, jelly, etc and you can insert it in before sex It's best to use lubricated condoms with spermicide. I've heard that it physically blocks the sperm from getting to the egg. Also it has a very small perfect use failure percentage. Just to be on the safe side. [ queenhearts's advice column | Ask queenhearts A Question ]
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