Yes on the AC plug in units. Get one a bit bigger than you might think.
If you fence is setup right, it will wap the crap out of your chickens too, but will not do any serious harm. I think one of mine must have hit it the other day......she was near it, and the next thing I knew she was running round the yard like she had been stung by a bee....cackling and complaining and came running up to me like I was going to help. Wire and poly tape fences are almost as effective as the poultry netting fences and are easier to maintain, and are less expensive, meaning you can have a bigger protected yard area for the same money. I'm told by my neighbors on both sides that we......meaning me and they......have foxes. They see them all the time and I never have seen one ever. I think the reason I never see any.......and I'm the one with the chickens........is that fence. To a varmint like a fox, coon or coyote, no chicken is worth the risk of another dose of that fence.
If you fence is setup right, it will wap the crap out of your chickens too, but will not do any serious harm. I think one of mine must have hit it the other day......she was near it, and the next thing I knew she was running round the yard like she had been stung by a bee....cackling and complaining and came running up to me like I was going to help. Wire and poly tape fences are almost as effective as the poultry netting fences and are easier to maintain, and are less expensive, meaning you can have a bigger protected yard area for the same money. I'm told by my neighbors on both sides that we......meaning me and they......have foxes. They see them all the time and I never have seen one ever. I think the reason I never see any.......and I'm the one with the chickens........is that fence. To a varmint like a fox, coon or coyote, no chicken is worth the risk of another dose of that fence.