DEET

Ben's 100 Max DEET Tick & Insect Repellent Spray 1.25 0165-7070
$4.49
Went camping in the Catskills and used it to repel mosquitoes. Seemed to work 8 hours as advertised. They were so bad when I stopped that I sprayed my whole campsite around my tent. I never got bitten, but they were hovering all around me looking for an opening. It seemed to work to keep flies off me at higher elevations. These flies did not bite, they were just a nuisance going after my sweat when I would stop. It does go on a litlle oily, but this must also be how it is so effective. Will be trying the Sawyer Permethrin in my clothing next, I am paranoid about ticks. I was 2 days walking in a mix of woods and grass/bushes and did not get any ticks with the Ben's. I would be Ben's again.

3M SRL-12 Ultrathon Insect Repellent Cream
$10.00
Used this in Thailand on a recent trip and didn't get any bites where the cream was applied. Even after a full day in the woods the areas where cream was applied were protected, but the areas that I didn't do would get bitten. Also, it's a nice size to travel with and no aerosol to deal with.

3M Ultrathon Insect Repellent Pump (6 oz)
$10.00
Over the years I have used various versions of Off, Cutters and many versions of repellant with differing amounts of DEET. Ultrathon has by far proven to be the most effective. I trusted this stuff to keep, possibly malaria ridden, mosquitoes off me when I went to Africa.

BUG BARRIER INSECT REPELLENT 100% DEET 2 OZ
$5.10
I purchased this product in November of 2007. I wanted a bug repellant that would fight against mosquitoes in Central America. As those who have gone know, bites from Central American mosquitoes are gnarly. So, in response to what I knew about these bugs, I purchased the product with hopes that it would help. IT SURE DID!!!

If you want to protect your skin from bites, BUY THIS PRODUCT. The only two downsides (which I feel don't really matter) are that this product is very strong and it's a very small amount. I applied some on my feet and my nail polish started to bubble. As someone had mentioned before, this product melts plastic---very strong. BUT not to worry, this will NOT happen to your skin. As far as product amount goes: if you are a freak like me and if you're terrified of mosquitoes, 1 bottle will only last you for 3 days---BUY MORE. The reason for this measure is because I had to apply the product constantly as it is very humid in Central America, and because I was obsessed with NOT getting bitten.

This product is really great and I plan to purchase it for this summer. I will be going to Puerto Vallarta and I'm sure there will be mosquitoes I'll have to fight off.