what is crocodile dung

Crocodile dung is a substance that was believed to have spermicidal or at least sperm-inhibiting effect. It was used as a contraceptive in ancient times, particularly in Ancient Egypt and Rome. The dung was mixed with a paste-like material and inserted into the vagina. Crocodile dung is alkaline to a degree similar to contemporary spermicides, that is, it chemically neutralizes the sperm when it enters the vagina. The paste presumably would dilute the dung to a non-infectious level. Elephant dung was also used as a contraceptive in India. However, it is important to note that these methods are not advisable compared to modern-day options.