We mixed peppermint essential oil with our rug shampoo to destroy a flea infestation. First we tried the store brand flea bomb, but it did not work. So we shampooed the rug using 15-20 drops of peppermint in a gallon of shampoo mix, two weeks in a row. It worked great, and now we no longer have fleas! Thanks to peppermint essential oil, we can all stop itching (including our cat)!