Depends on the location, they are prohibited in some places. Check your local laws ( City if applicable and county ) as well as state law.
For more information on Arkansas Law visit the Arkansas Legislature's Website and click on the "Search/View Arkansas Code" link on the lower left side of the page, you will be directed to a Lexis Nexis page.
All the camps had electric fences.
Yes, the outer fences had electric currents.
To buy an electric fence you can order from a reatialier of these fences. They come to your home, measure your lot, and will do the installation job as well.
Most perimeter dog fences are electric, but there are alternatives. Best Friend Dog Fence is one that is non electric: http://www.bestfriendfence.com/dog-fencing-info.asp
You need to check local laws for your answer. Fences are governed locally.
You can purchase electric fences online and in stores. If you are looking for more information on electric fences, you can check out http://www.ibiblio.org/farming-connection/grazing/features/fencemis.htm.
There are companies in Houston Texas that offer service to install electric fences. The companies include Doggie-Do-Rite and Mr. Electric of Northwest Houston.
Fences just indicate property. Trees produce oxygen so we can breath.
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It is at the Control Center
You need to specify which camp.
Use fences. An electric perimeter fence is almost a necessity when you have large farm animals. If you can not plug an electric fence in they also make solar powered fences.