Home-made mosquito repellent can be as good or even better then retail repellents. I read this article about it with great interest. This triggered me to plant some catnip seeds in my green house last year. My cats loved the idea too!
This spring last years catnip exploded and overtook all the other plants in the green house. Time to cut it and make some repellent before all the other plants die of being in the shade...

Here is the recipe I use for making catnip anti-mozzie cream: