I've recently been looking into spermicidal foam and I've got a few questions... Now I've heard that spermicidal condoms are not a good idea because the nonoxynol 9 they contain irritates the vagina. So is the foam any better? because it also contains nonoxynol 9 but I haven't heard anyone talk negatively about the foam... So any ladies that have had experience with this please give some input... Thank you