DIY Thieves Oil Recipe: 1) 20 drops clove essential oil. 2) 18 drops lemon essential oil. 3) 10 drops cinnamon bark essential oil. 4) 8 drops eucalyptus essential oil. 5) 5 drops rosemary essential oil Combine all oils and store in a dark glass container (such as the little amber bottles you can get at the health food store). This makes a fairly small amount, so feel free to double or triple the recipe.