About 85%: Because sometimes there could be a microsscpic hole or sperm can leak out around the edge, if u use condoms and something else like contraceptive foam or film, or other, then the effectiveness goes way up.
Answered 9/28/2016
5.4k views
98%: If used perfectly, condoms boast a 98% efficacy.
Answered 10/4/2016
5.4k views
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