where I hunt there are only a few parts of the land that the cows dont go into. any place the can go to I know they will rub up against it and knock it down, dumb things grrrr. so for that reason I only have one but have not put it up yet (scared cows will destroy it) maybe if I can get a corner of the property fenced off then I will put it up. we will know then how well it works!!!