Anyone ever used this? How far away will it work? I have a neighbor who
lets his dogs bark and bark and bark in his back yard.

I like dogs but do not like to listen to them bark, sometimes late at
night.

The dogs are maybe 200 yards from my house but the barking is annoying.

If I hear the barking is it reasonable that the "bark off" will be
strong enough to reach them and hae an effect?