Yes, I have the 5 mile solar from Tractor Supply. It's output is .4 Joules and I used it on 9 ac of pasture. The horses and cows were always getting out, and always at the worst possible time. The last time was in heavy fog at 0530 hrs and my neighbor woke me up saying that my two Clydes were walking down the 2 lane road 3 miles away. I don't know how they didn't get hit & kill someone or themselves. So that day I went to TS and bought the 100 mile plug in type that TJ recommends. The thing puts out 6 Joules, and let me tell you what a difference. I can grab the 5 mile in bare feet and take the hit no problem, the 100 mile will actually make me see a blue flash in my eyes(yes I was dumb enough to "test" it that way"

) and my jaw hurt for 20 min.
I now use the 5 mile on the chicken coop and it has kept the predators out. The Clydes no longer mess with the fence at all and have never escaped since(2 years). However, the cows can either smell it or sense it, but they know when it is off..takes them about an hr to walk thru the aluminium slick wire and start feeding on the "greener grass".