retrieverman,

Here in FL. there are Dog areas in deer hunting WMA's. I hunted with Hog dogs for 25yrs
and never had them chase deer. They will spook the deer around, but will not run them
off the property. Those dogs on your property were not properly Trained for Hogs.
I started training my dogs at 3 to 5 months old. AT that age you start with a hog skin,so
they get that scent from a young age and playing rough with the skin. They get tired of
getting poped with it. At 10 to 12 months old they HATE that SCENT and SKIN. I would scout
around where there was fresh HOG signs and put them on trail.
I had 2 trail, 2 bay and 2 CATCH dogs that worked as a team. By the time they were 1 1/2yrs
old, I would have a HOG in about 1hr. If they are not properly trained for HOGS, yes they will
run a DEER off your property and FOX,RACOONS,ARMADILLOS and the rest of the critters.
My friends and I would cross breed CALAHOULAS, RODICHIAN RIDGE BACK and PIT BULL.
HOG dogs are bred to hunt and catch hogs not DEER. WE would not keep any DOG that would
go off trail.
You could bait and TRAP the hogs if you don't want dogs on your property. The hogs will ruin and eat
everything on it and that's the way you are going to have the deer leave.
Like I said if the dogs are not trained for HOGS, yes they will run DEER into the next two COUNTIES!

Hope you solve your problem....Good Luck!!