Effective mosquito defense: How to make a natural insect repellent

You're sitting in the garden for the evening with a cold beer, but you still can't relax? It probably has something to do with the whining that you have in your ear from mosquitoes continuously flying past that are out to get you. Of course, you can go for one of the usual insect sprays you can get at the store. But be warned: they sometimes contain dangerous substances that can affect your nervous system. Instead, you can simply create your own insect spray. For that, all you need, besides vodka, is few different types of oil.