Buzz Away Spray by Quantum is an all natural DEET-free insect repellent. It contains citronella oil, as well as other essential oils including peppermint, lemongrass, eucalyptus, and cedarwood. Some people find this combination of strong essential oils too pungent, but I personally liked it.
The product was relatively effective, but the scent was so strong it was almost overpowering. Fortunately, it was very pleasant, so I treated it as aromatherapy. You have to apply a lot to keep the insects away, especially mosquitos which are not inclined to be repelled.
The most important factor about Buzz Away is that it's safe. I am unwilling to put DEET insect repellent anywhere on my skin or the skin of my children. I recommend this product to anyone who is concerned about the dangers of DEET insect repellent.