Sometimes you have to buy the "cheaper" version of an item to understand why the more expensive versions cost so much. It wasn't until I got this thing and set it up that I understood one simple truth. If you're buying one of these to scare off animals or any other living breathing thing, what you want is something with a heat sensor, not a motion sensor. That's why the others cost so much more.
This sprinkler works great! It comes on in an instant and moves a lot quicker than a regular sprinkler,which is good because the deer are quick. We bought this because the deer ate my wife's plants but since we put this up we haven't lost any. Even if the water doesn't get then the noise alone should do it. It seems to pick up movement even further than they claim, but that's fine with me. You can always turn the sensitivity down. I might have to order another one for the front yard now that I know it works so good.
We live deep in the woods with all the wildlife that goes with it. Unfortunately all that wildlife also loves our garden. The deer were eating everything off at ground level. Nothing seemed to discourage them in the long term, and we were loath to put up high fences. As a cheaper experiment we bought two of these gadgets and put one at each end of our garden. One mounted on top of a post, and one at ground level. I wish I could have been watching the first time a deer or raccoon walked up to one of these sprinklers. We have not had a nibble or a footprint left behind by any animal since these went in to action. The garden is growing great, and we no longer have to take seconds with what the deer and raccoons leave behind. The only down side is we have to remember to switch them off before approaching the garden ourselves. :)
For years, strangers have been coming into my yard and stealing our mangoes! They walk up the driveway and through 10 feet of yard and, bold as brass, steal the fruit right off our tree. We wait for the fruit to tree-ripen, but they come in with bags and just take what they want. These aren't kids, they're grown adults (some over 60!) trespassing! A couple of times, entire families just raided it. I've tried yelling at them, but they just scamper off with whatever they want. It's a bit ridiculous! We planted the tree, take good care of it, and they just come and steal the fruit!
Liked it , now my uninvited are taken care of. was easy to setup.