I make a point of wearing gaiters if I walk through pasture and bracken I have had ticks on me after camping in a field where there had been sheep,a jack russel was covered with them so he was taken out to sea and made to swim back to the beach which got rid of the majority.You must be very careful about removing ticks the mouth parts must come away or they will cause a nasty infection of the wound
There must be a safe approved method of removal (I put Vick on mine which worked but I was told I was lucky!)