We have found them very effective in dogs, cats, chickens, ducks, and goats. For the cats and the dogs it is used to repel them from counters and from the kitchen during meal times.
With chickens and ducks it is effective to keep them in the coop area during evening round-up and getting them away from the gate when we can not let them out due to weather.
The goats fear it the very most of all. When entering and leaving the goat’s area, the goats will try to barge their way around you to get to the milking area. You see that is where we store the grain we feed them. So for them it is an all you can eat candy store. For this reason we need to keep them out of this area. But when a 135 pound goat wants to go somewhere she goes and you are not going to stop her. So we have the Death Ray, with this powerful weapon even the most stubborn goat will run when the Death Ray is pointed at them. We have only needed to spray them a few times for them to get it. Now the meer sight of it will cause them back away from it.
An example of just how effective the Death Ray is; a few days ago while tending the goats. I placed the Death Ray on the gate during my chores. Well, as the gate closed the Death Ray fell from the gate and hit the ground. The goat scurried to the back of the barn to get away from it, all eyes firmly placed on this fearsome weapon. I then picked it up and put it away and peace was restored in the barn!