Webmar 17, 2007 · animal doctor: Olive oil makes fleas disappear. Michael fox, united feature syndicate march 17, 2007. One year, there was a flea. Can i use any type of olive oil to kill fleas on my pet? Weblet’s take a closer look at some common myths about using olive oil to kill fleas: Olive oil can completely eliminate fleas. While olive oil may have some suffocating effects on. Webwhile olive oil may smother and kill some fleas, it is unlikely to eliminate an infestation completely. Additionally, using olive…