Here in Thailand people here have been using fans to deter mosquitoes probably ever since fans were invented. If you sleep in a non-aircon room with the window

Here in Thailand people here have been using fans to deter mosquitoes probably ever since fans were invented. If you sleep in a non-aircon room with the windows open, your options are a fan, or a mosquito net. Both work really well. For outdoors I have a big industrial 18" fan that works pretty well too. It all depends what time of the season it is and how many mosquitoes there are.