Neither a garage screen nor an electric fence are substitutes for being responsible enough to train your dog. The "fence" can be a helpful augmentation, but not something to rely on. Many dogs learn to withstand the sound and shock long enough to race across the wired zone.
And think about your neighbors when placing that electric fence. Imagine a poorly-trained dog pushing the shock limit to bark and slather at passersby. Those walkers can't see the fence and don't know it's there; all they know is a potentially aggressive dog threatening them from mere feet away.
Train your dog. If you can't or won't, then don't have a dog. Don't rely on technology to do it for you.
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