Condoms protect against unplanned pregnancy and most sexually transmitted infections, including HIV, gonorrhoea, chlamydia, and syphilis. Use only water or silicone based lubricant with a condom during vaginal and particularly anal sex. Compound Interest: The chemistry of condom materials from sheep guts to synthetic rubber The difference between spermicidal and non spermicidal condoms This Saturday we are talking about barrier methods for birth control. All of these forms of birth control can help prevent pregnancy without using hormones. Swipe through to learn more! Alt Ultra Ribbed + Spermicide Textured Lubricated Condoms Trojan 8 Types of Spermicide: Condoms, Gels, Foams, and More