DDT. It use to control ticks but then they outlawed it.
I have spent my whole life in the woods. Believe me, I've had ticks on me dug in and or just walking on me. Deer ticks, the ones that cause lyme disease and dog ticks AKA wood ticks, the ones that cause rocky mountain fever and now a couple of other illnesses.
I give my dogs NEXGUARD. Its a chewable flea and tick preventative that works better than anything I've tried over the years. Watch out for Frontline, its garbage and WalMArt got sued for selling a chinese counterfeit that turned out to be vegetable oil.
You can get chewable NEXGUARD at a Vet for around $22. And the best thing about it is your dog can go in the water anytime without washing it off.
For me I use baby oil and the 40% deet deepwoods spray. Ticks HATE baby oil! Rub it around your ankles, arms and neck.
Spray your shoes, boots pants and sleeves with deepwoods. Check yourself every night for ticks. If you find one dug in remove it by grabbing it just behind the head with tweezers. Dont burn it or put baby oil on it, it could puke into your bloodstream.
Remove it with tweezers and save it. Put it in a baggie and in your freezer. Rub some antibiotic paste onto the bite area. If you develop a rash or infection or feel ill take it and yourself to the doc.
But the most important thing is to check yourself for ticks every night or morning. A deer tick needs to be dug in for 24 hours to pass on Lyme disease. Look for a large red ring (bulls eye ring) around a bit.
http://hardinmd.lib.uiowa.edu/pictures22/cdc/9875_lores.jpg
That may be Lyme.
Flu systems may be Rocky Mountain Fever. Always keep the tick in a container in your freezer until you are sure its safe to get rid of it. This will help the doc diagnose the problem.