Mosquitoes seem to be most active on hot humid days with low wind. They can be around all year but February – August seems to be when you see them in higher numbers. A hot day at a campground with lots of humans no wind smells like Thanksgiving dinner to mosquitoes. Keeping yourself protected is very important and the best repellent are sprays that contain DEET like Off Deep Woods. There are a ton of DEET-FREE products on the market but Off Deep Woods is going to keep you safe.