What the first nation peoples did was cover themselves in Bear Fat/Grease. It works great if you can get it. Steady garlic consumption and I use my combat scarf or shemagh apply the deet to it wrap in appropriate fashion.
Hat goggles scarf and proper airsoft attire where are they gonna get you?
The citronella candles are a great gimmick the light attracts the bugs then get repelled from the smell so come over to you for a snack around the camp fire. Trick I learned pour the excess Citronella candle wax on the bon fire, oh this is dangerous so step back fast. Bright hot flame averages a 5 foot leap, anything in the radius will lose its wings. Oh and your mother was right "don't scratch!" its the difference between 2days and two weeks.