I rescued two little terriers a 18 months ago that were living in conditions that would make you cry with 15 other terriers. My dogs had never been socialized and it took a good eight to twelve months to be able to leave them around my grand children. One of my terriers thinks she's Rocky Balboa and the other believes she is The Terminator. I can't leave my dogs off-leash outdoors as they are batpoop crazy around other dogs. They have LITERALLY tried to lunge at boxers, pitbulls, and other dogs I can't identify.
If I allowed someone with a service dog into my house, I can assure you that we'd have the Ali/Frazier fight re-enacted in my living room within 30 seconds of the doorbell ringing.
I am hoping that confronted with the situation, I could explain this to a prospective guest and he/she would be more than happy to pass on my listing. But if the guest insists on staying, am I liable for what my doggies are going to do their beautiful, expensive, much-needed service animal? Cuz I know my dogs will win.