Combine four cloves of garlic with one cayenne pepper using a food processor or blender.
Add 2 cups of water to the mixture and let it steep for 15 minutes.
Strain the garlic mix into a pump sprayer, and throw away the solid parts of the herbs.
Spray the mixture on the skin. Refrigerate what is left, which should remain good for about a week.
Drop six drops each of lemon oil, peppermint oil, eucalyptus oil and lemongrass oil into a plastic sprayer bottle.
Fill the rest of the bottle with water and shake it gently to combine the oils and water.
Spray the mixture on the skin. Reapply as needed.