Many years back I drove the length Asia in a charity road race, and while it was a heck of a lot of fun I had to deal with millions of mosquitoes along the way. I’d get up every day covered in dozens of fresh bites, and the blisters got so bad that I had to see a doctor more than once.
I carried a can of 50% DEET mosquito repellent to keep away the bugs in my travel toiletry bag, which I sprayed everywhere – on my skin, clothes and inside the car – to keep the bugs out of my home from home. The DEET worked great, and my car was usually mosquito free.
Unfortunately, by the time my trip ended in Mongolia the car was an absolute wreck. The DEET had melted the window seals, the rear view mirror, the seat covers, the dash board and the heating vent. The car was destroyed. It was only months later that I learned that DEET is a solvent strong enough to melt clear through a layer of plastic.
Since then I’ve switched to natural mosquito repellent that doesn’t use DEET as an active ingredient. Natural repellent use cedar and citronella to control mosquitoes, and while natural stuff may not be that powerful it’s certainly healthier.