Permanone is very effective. Spray your clothes, including pants, socks, SNAKE boots and shirt. I turn my pants inside out and spray the inside also. Let the clothes dry before you wear them. Permanone can be very irritating to the skin, so don't spray it directly on yourself.
However, if you get a bunch of bites, get ready for some torment. I have never found a remedy that really works for very long but have tried about all of them mentioned so far. About as good as any is the vodka application - taken internally.It doesn't cure the itch, but after a while, you just don't care anymore.