I give my dogs Nexgaard for flea and tick protection and other meds for heart worm and other parasite protection. The heart worm meds include ivermectin but Nexgaard does not. Meds don’t keep ticks off the dogs, but soon as a tick bites the dog, it dies. I live in an area where ticks are abundant and a real problem. The ticks will often jump off the dogs and find a way to get on me and every now and then I get bit. So the other day I was feeling like I was coming down with something and swallowed a glob of horse ivermectin as I sometimes do. The sick feeling quickly went away. The next day I felt something on my torso and —damn— it was a tick. But it was dead - like what happens on my dogs. Didn’t even get a bump. I wonder if it was the ivermectin in my body. Anecdotal but wanted to share for frens in tick-plagued areas.