Dont fear a tick getting on you. they are easy to remove the day they get on you. use a credit card or loofa sponge in your shower. Run your hands down the backs of your legs to feel for them where you can't see. I'm familiar with spraying clothes with pemerthrin, but it's only cost effective for occassional use. It can last 2 weeks on clothes that dont become overly soiled a field IME.
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PEPPER SPRAY AIN'T BRAINS IN A CAN!