I caught about twenty or thirty bloody grass / 'roo / seed ticks on my trousers on the weekend. I ventured back to a place I call Tick Spring, not having been there for a couple of years, to see if there were still ticks (and pigs) there. I can roam for miles through the bush without so much as one, but at this place, they seem to be thick. They don't seem to burrow-in, but just crawl around biting as much as possible. Luckily I saw them in time to spray (smother) them in Aeroguard, which killed them.
All the best, DC, Tom and Pete.