Active ingredients include neem oil and an essential oil blend of geranium, lemongrass, eucalyptus, lavender plus cedar, and more. It smells good and is effective against fleas, ticks, gnats, and mosquitoes. Great for people (age 3 and up) and dogs (no cats-they are sensitive to the essential oils). 4 oz. bottle This is a lotion type of product with natural preservatives and emulsifiers.