It's not a product that you would necessarily call inexpensive, but if you dilute it, it will last for ages. I got one of those little spray bottles and mix about one part SOS and two to three parts water. Then, you spray it on the arms and legs, and you're good to go. The 24 oz bottle of the oil will then last for ages. Be careful with your clothes, though--it is oil and can stain. I hold the spray over the sink and spray it on my hands, and then rub the exposed parts of the body with it and then wash my hands good. The best thing to do would be to use it right after showering. And you'll smell good in the bargain!
You may think this is funny (though I didn't). After rubbing my already bitten arms, legs and neck with the SOS mixture today, I went into the kitchen to have lunch. Don't you know that a mosquito landed right smack on my face and I killed her right there! There on my cheek was a smashed mosquito with blood. Yuck!
Believe me, folks, it's been my experience that usually they don't come near you. This one was a daredevil. lol