So are those ticks that died and fell off of your Seresto collared dog after the hunt, or did you find them alive and attached or crawling on your dog's skin?
It's been wetter than normal here this year, and the tick population seems higher than I've ever seen it. I've sprayed about a 50 ft. wide band around my house, garage, and the areas I most commonly walk through grass or weeds with a .75% solution of 36.8% SFR Permethrin, and have still caught a few crawling up my arms or legs. One I caught took over 15 minutes to become immobilized after I sprayed it with a direct shot of 0.5% solution of Martins 10% Permethrin. That's why I started mixing the SFR I spray around the house stronger. It makes you worry about the ones that might attach and feed without ever being noticed. One was a deer tick, and the others were brown dog ticks, which aren't supposed to carry Lyme's disease, but do carry other diseases.
I put another live tick in a jar because I was going to put it on an article of hunting clothing that I pretreated with a stronger solution, as a test. It crawled around for several days, and then appeared to die. About 5 days later, I was going to discard it, but instead I put a small piece of wet paper towel in the jar. to simulate moist leaf litter. The next day, it was crawling around again. I did that a few more times before it finally didn't revive after having no moisture in the jar for over a week. They are very hardy and persistent critters.
Lloyd's experience, and the ongoing ordeal of a co-worker's wife made me take ticks a lot more seriously than I did previously.
That would be a starter set here.
This might help to explain Joff's brain damage...