I could be at the bottom of a swimming pool filled 10 feet deep with 100% DEET wearing a wet suit 3 inches thick covering every square inch of my epidermis and breathing through scuba gear, and I would emerge from the pool covered head to toe in mosquito bites.
DDT would be great. I wish they would let me use it.
I went camping in Maine a few years back with a bunch of guys, it was during mosquito season, it was pouring rain, and somehow, someway we decided that was the time to take the advice of someone who thought that Skin So Soft was a valid alternative to regular mosquito spray.
Not only did we get eaten alive, we smelled like French whores, and every single thing that we cooked and ate tasted like Skin So Soft.
I can barely even smell that stuff now without feeling nauseous!