We have mostly deer ticks around here, ranging from the nymphs about the size of a poppy seed to the adults about the size of sesame seeds 3/16" ish. We typically either pull them off or use tweezers, but every once in a while we get a stubborn one which is why the interest in the Tick Release/citrus oil. My take is that it's probably a form of Limonene which as i understand it has been used as a solvent and a natural pesticide. Here's hoping the pesticide aspect will also help the little buggers loosen their grip
Hobbyist woodworker
Maryland