Natural tick repellent for dogs

[Smellfish]

I believe that Frontline is not a tick repellant. I asked my vet and they told me that Frontline kills the ticks but doesn't deter them. I also use Brewers Yeast on my chocolate lab. I'm not sure if it repels ticks but I do think it makes him shed less.

I get him the lyme disease vaccination and "Pray". I take him to Truro/P-Town as well as MV several times a year and also spend a good deal of time on the rest Cape Cod ... I worry every time we go.

I searched online for a "Natural" tick repellant and I got suckered into a $30 bottle of lavender smelling crap. It didn't work at all. I watched a tick crawl right across an area that I sprayed with the stuff.

I also heard bad things about BIO-SPOT ...

I would like to have a peace of mind solution as well.