I'm going to post this for the benefit of any "lurkers' who might recognize themselves as the owners of a *possible* barker:
There are a scad of electronic/ultrasonic bark-stoppers available for under $50 - when your Precious barks, the unit "hears" that noise and emits a loud squeal that humans can't hear - but dogs can. And it's annoying to them - probably as annoying to THEM as your dog's barking is to your neighbors - so they usually will stop barking.
To my RV Pet Stop friends: yes, this is a "gadget". We all know that really tired dogs are less likely to bark - but not everyone is either inclined, nor physically capable, of walking their dogs vigorously.
So back to the lurkers: surely a $50 investment in a bark-stopper is cheaper than getting booted from a campground or annoying your neighbors.
On edit - for $33.00 - you can have silence in your house and RV
http://www.amazon.com/PetSafe-Outdoor-Ultrasonic-Bark-Deterrent/dp/B000UZNLGA/ref=sr_1_2?ie=UTF8&qid=1371918425&sr=8-2&keywords=ultrasonic+bark+stopper