I use an electric wire strug along my pre-existing cattle fence. The chargers are made by Fido Shock. The charge is strong enough to hold small animals (squirrls, egrets, etc.) if they get on it so you have to be careful of what/who gets exposed to it. For dogs that are 20 lb. or more it works fine and only takes 2 or 3 'occurrances' to train them not to get close to the fence. After that you can turn it off so you don't have to worry about other small animals/people. In your case, you don't have a fence to begin with so this isn't a sole solution for you. I just wanted to provide my experience with this kind of deterrent.
Also, i don't understand how anyone can tell you what you can do with your dogs control on your property. As long as they stay within your property boundary I don't see that they have the authority.
Mike
Also, i don't understand how anyone can tell you what you can do with your dogs control on your property. As long as they stay within your property boundary I don't see that they have the authority.
Mike