I agree that many do not even know they are bitten, and some show no rash at the bite site, but still get Lyme. I found 2 deer ticks crawling on me in the last 2 weeks in central Indiana. If it warms up into the mid 40s, they can become active. We treat our 5 German shepherds for ticks, but still find the occasional live tick feeding on them. They also bring ticks into the house... Just one of the hazards of being in the wild. While the spirochete that causes Lyme is killed by antibiotics, symptoms can be chronic if left untreated for an extended time. There is a lot of misinformation and alternative medicine that has developed as a result of these chronic symptoms, but none have gained any credibility yet among scientists.