Yes, your dogs will get ticks! Lots of them!
But if you spray before hiking, and it wears a tick collar it won't be as bad, so long as you check yourself after hiking. If you hate ticks, get some guineas to help your chickens eat them so they'll stay out of your yard. There might be 2 poisonous snakes you have to watch for, but I've never seen them. (I've heard Guineas go after snakes too) Missouri is such a beautiful GREEN state compared to the other states. ON politics, we are so divided, to each his own. If you are in Rolla you will be very close to the Meramec and Current River which is beautiful for float trips and horsebackriding. Clean air is such a wonderful thing, as is not having to deal with traffic jams and rush hour!
I live in central missouri, about an hour north of Rolla, and love it. Columbia MO is my home town, but it has gotten too big, and now they have more crime there like the big cities have. So I"ll stick with smaller, even if I can't have my thai food and japanese food without driving 30 minutes!