TO PREVENT sexual transmission of disease, it's important to use condoms, and use them properly. Robert Hatcher, MD, MPH, professor of gynecology and obstetrics at Emory University School of Medicine, Atlanta, says many people are trying them for the first time and don't know what they should do to make the best use of condoms.
The following checklist is taken from Hatcher's book Contraceptive Technology 1986-1987, ed 13. New York, Irvington Publishers, 1987. It gives physicians a guide to follow in discussing condom use with male patients. It may also be used as a guide for discussing, with female patients, how they may initiate condom use to protect themselves and their partners from sexually transmitted diseases.
Hatcher's "Condom Sense" Rules
Use a condom every single time you have intercourse. There is no "safe" time with regard to transmitting disease.
Put the condom on as soon as erection