I've had RMSF. 4 years ago. Its a pretty rank fever. Should have gotten on it sooner than what I did because by the time I started on antiobiotics, the infection had inflamed the area around my heart (pericarditis) and had caused a lot of strain on my heart. 4 days in the hospital in the cardiac intensive care unit. I was living going to school in Tulsa, and city doctors don't see a whole lot of tick borne illnesses. They just couldn't understand how a 26 year old could have any kind of heart problems, regardless of what bit me.
So, these days I spray down with Coulston's Duranon Tick Repellent. Its 50% Permethrin. When I first got told about this crap, they told me it kills ticks as they crawl on your clothes. I thought, "Hogwash." Well, it ain't no lie! I've been chasing hogs for the past 2 evenings on our land and seeing many ticks crawling on me, but they never last very long. I did find one crawling on my side, but I suspect he sliped up under my shirt before I remembered to tuck my shirt in.
The Permetrin works! It'll probably give me cancer in 10 years with all of it I use, but at least I won't have RMSF or Lymes!
Cam