Human sperm is mobile only in a slightly acidic environment which is the normal state of the human vagina. Soap is a very basic material introduction of a small amount of soap into the vagina before intercourse will raise the pH, a condition which causes the sperm to coagulate into a ball, that exits the vagina upon simply rinsing with water. The present invention is a composition of soap, water, and other natural materials that can be used as a vaginal suppository.