"There has been much research proving that most viruses, fungi, and bacteria cannot live in the presence of many essential oils, particularly oils high in phenols, caracrol, thymol, and terpenes. Just a .2 percent concentration of lemon oil and vinegar can kill Staph - even the antibiotic-resitent varieties. Eucalyptus, lavender, tea tree, grapefruits seed extract, lemon and oregano essential oils kill MSRA and E. coli on contact. Thieves Oil has been proven to kill 99.96 of unhealthy microbes. Obviously, the medical, pharmaceutical and chemical industries and Donald Rumsfeld don't want people to have this information.
The oils should be stored in glass vials/bottle and stored in a cool, dark place. Don't leave bottles open: the lighter, volatile molecules evaporate quickly, leaving the heavier molecules in the bottle. The evaporation changes the chemistry of the oil, making it less beneficial.
I have been using Thieves Oil for almost eight years now. The formula that works for me is 3 parts cinnamon, 3 parts clove, 3 parts lemon, 1 part rosemary, and 1 part eucalyptus. I have seen recipes calling for equal amounts, but I lighten the eucalyptus and rosemary so that I can use Thieves Oil orally. (Eucalyptus and Rosemary can be highly toxic if used orally.)"