In reply to robin mueller: I'm a scientist working on ticks and mites. LISTEN to the CDC/NHS advice (good sources) and try not to smother or twist the ticks. There is evidence out there that seems to me to suggest that anything that stresses them will cause them to vomit back into the bloodstream and this can pass on disease. So try not to burn them off either!
If you like you could look at the following papers:
Ramiro L. Gutiérrez, MD, FACP And Catherine F. Decker, MD, FACP, FIDSA (2012) "Prevention of Tick-Borne Illness" Disease-a-Month, Volume 58, Issue 6, Pages 377–387.
M. Gammons And G. Salam (2002) "Tick removal" American Family Physician, Volume 66, Issue 4, Pages 643–645.
The golden rules from what I can find are to remove ticks off as soon as you see them, as this limits transmission phase, so check yourself when you come in from walking (or better get a partner to do it, see the classic country song "Ticks" by Brad Paisley). Also, ticks are a major disease vector for Lyme disease and many other things besides, personally, I'd always check if I need vaccines; For example against Tick Borne Encephalitis if walking in areas in mainland Europe.
And I'd tuck my trousers into my socks!