I used to think nothing of ticks, just an inconvenience of going outdoors. While walking my dog in the park by my house I picked up a tick I never even saw. I was getting out of the shower in the morning and it looked like someone spray painted the target logo on my chest. Went to the doctor and he confirmed I was exposed to lyme. I hate to think what would have happened if it was behind my knee and maybe not so noticeable. I cannot believe you can get into trouble just walking your dog in a beautiful park on a nice spring day, but you can, check yourself well.