On a trek in Scotland earlier in the year we got chatting to a chap about ticks, he reckoned the ban on cypermethrin sheep dip in the UK has been a big contributing factor, I've not really looked into it but I can see his point.
He said highland sheep used to known as tick mops because they'd gather them all up as they grazed.
Whilst there's an element of truth in the tick mop theory by far the bigger issue (in the north of scotland) is the sharp increase in the deer population of the last 20+ years. Much of the ground that holds the largest deer populations hasn't held sheep for more than a century, when the fashion for stalking saw a move to deer forest management and an end to sheep letting, the sheep were moved off the large estates to smaller parcels unsuited to deer stalking. So many of the great empty expanses have been sheep free for quite some time.
The estates, the move from the old money approach, where estates were run for the sporting enjoyment of family and friends thereof, to the modern commercialisation of deer stalking and the need to make stalking pay, has resulted in an explosion of deer numbers, in many instances to the detriment of the environment through increased grazing pressure and the number of deer wandering the roads and verges causing issue for drivers.
Simply put most estates now say one thing to the red deer commission and do another on the ground. If you're in the business of letting stalking it pays to have animals to shoot and animals that are accessible to the less able bodied, thereby increasing the market, "feeders" wild deer that are fed to 1. To bring on condition, and 2. To ensure there are a few beasts nearby to the road when the occasion requires it.
The up shot of this change in practice is that now we have the highest number of deer ever seen in these islands, and by extension the highest numbers of "deer ticks", the lymes' carrying tick.
Precautions are well worth taking but (IMVHO) the best precaution is to stay covered and tucked in, checking yourself out when you return at the end of the day, or at the end of each day if you're staying out. The hair line is the place to check if you've stayed covered up and a deticking tool the device for the job. No amount of pesticide will work if you're wandering around in shorts and a tee shirt.
That said if you are wandering around in shorts and a tee shirt make sure you give yourself a good check (don't forget the belly button
) and remove ticks promptly and properly, even a scabby lymes' carrying tick takes time to infect and prompt proper removal sorts 99.9% of the risk. Even so, keep an eye on both the bite sores and your general health.