Okay just so you know not only camels used this for method! That was just where it started! I am completely against this method as I'm sure you have read on my other posts, I just wanted you to read this=) That it was not only for animals but women used this and WORSE back in the 1800's. Imagine how they felt! We certainly aren't alone in this but I think it's time to retire this method once and for all!
Ancient writings noted on the Kahun papyrus dating to 1850 BCE refer to contraceptive techniques using a vaginal pessary of crocodile dung and fermented dough, which most likely created a hostile environment for sperm. The Kahun papyrus also refers to vaginal plugs of gum, honey, and acacia. During the early second century in Rome, Soranus of Ephesus created a highly acidic concoction of fruits, nuts, and wool that was placed at the cervical os to create a spermicidal barrier.