Instead of using chemical based mosquito repellant, this natural solution seems good. Having this on the patio and backyard can drive away mosquitoes from entering inside the house.

"For the Deck- Mosquito grass (a.k.a. Lemon Grass) repels mosquitoes | the strong citrus odor drives mosquitoes away-very functional patio plant, plus, the leaves make a great healthy tea, and the cut up stems are great in Thai dishes, like Tom Lum (coconut milk) soup."

via fabuloushomeblog.com