Agreed. The dogs are doing what their instincts tell them to do. When they turn their aggression toward you it's time to take matters into your own hands.I think your going about it the right way. If one charges you though it may be time to take out the whole pack, if they are aggressive that's when the game changes. I won't shoot a dog for merely running deer though or being on property I'm hunting. I have had dogs run deer to me.