Bird-X Solar Yard Gard, Ultrasonic and Solar-Powered Animal Decoy Device with Motion Sensor, Easy to Install, Covers up to 3,000 sq. ft., 15-25 kHz Frequency, 8.5" x 7" x 4"

This works as intended. The crows caused problems in my backyard and I tried this one, it works after a couple days, the crow didn’t come anymore, however the squirrel also stopped coming, so I turned this off and the squirrel comes back but not the crows

I tried this item for a very long time before giving this review. I followed all of the recommendations from the manufacturer & have had no success. Birds still fly, land right in front of device as if it doesn't exist. Not sure how others as having any success.

I've been using this product for over 2 years now, I'm quite satisfied!If you're finding that it's not keeping certain animals away, please read the manual. You have to adjust the settings for the type of animals that you're trying to keep away. Also, you shouldn't be hearing this at all. It omits a high frequency sound that only the animals can hear and one that they clearly do not like, this does not affect house pets.I've had black bears walk right by my feeders after putting this up. So again, read your manual and adjust your settings.You'll find this is really a great buy! They only cover a certain area, so if the area you need protected is fairly large, I highly suggest (for effectiveness) you pick up another.

Not effective. Save your money.

I had a problem with multiple animals in my front and back yards:* The neighbors' cats loved making a litter box out of my front yard and came nightly to do their business.* Raccoons traveled through my back yard, as if they owned the place, and left their smelly and dangerous poop in my back yard.* Squirrels ran gleefully across my front and back lawns burying the goober peanuts and walnuts that my neighbor faithfully provided to them to keep them coming to his backyard.I was desperate for a solution so I started buying multiple motion-detected ultrasonic devices over the past several years. Of the different brands that I've purchased, the solar-powered Bird-X Solar Yard Guards have been the most reliable. They aren't as fancy as some of the other devices that you'll find on Amazon that include loud audible noises and flashing red lights but I've found that the Bird X are the most reliable. (Most of the other brands malfunctioned or stopped working altogether after a limited period of use.)If you have a decent size area to cover (as I did), you'll need to purchase multiple devices and position them so several devices are always going off at one time over the area that you want to protect. I call these zones Animal Annoyance Zones; they don't harm the animals but they annoy the heck out of them when multiple devices are going off at the same time.So, I'll give you the good news first. Here's what HAS worked with the Bird-X Solar Yard Guards:* They quickly annoyed the neighbors' cats that used to come into my yard — so much so, that now the cats avoid my yard completely. They literally will walk on the sidewalk or in the street in front of my house to avoid coming onto my property. I'm happy to report that my front yard is no longer the neighborhood litter box!* The raccoons took some time. (What can I say raccoons are stubborn beasts!) The raccoons would come through my yard and initially be startled by the strobe lights and then move away from my yard. Later, they would come back and investigate the devices to try and determine what they were and then quickly move through my yard to another location. I found that putting a motion detection device that flashed red lights at night with the Bird X Solar Yard Guards eventually drove the raccoons from my yard. They seemed to have gotten tired of dealing with all the audio frequency and flashing light activity.Now, the bad news! Here's what HAS NOT worked with the Bird-X Solar Yard Guards:* They are useless on squirrels (even when I used the recommended frequency which is different from the frequency for cats and raccoons)! I still have goober peanut shells all over my yard. Yesterday, I went through my front yard and found the neighborhood squirrels literally dug holes in front of several of my Bird-X devices. Clearly, the squirrels appreciated me putting these landmarks out for them so they can locate their buried nuts in the future!So, there you have it: if you're willing to buy multiple devices and position them correctly, these devices can work on some animals. However, if you're using these devices to drive Bullwinkles' friend - Rocky - out of your yard, Rocky is probably not going away anytime soon.

You can see by the blue light on the front of the camera that the unit is currently blasting its annoying noise, and the skunk is unaffected, happily standing there eating sunflower seeds that were dropped by the birds.The noise is audible and piercing, and my dog and I were unhappy about my decision to turn it on in the house after installing the batteries, but it did not have the desired effect with regard to the skunk problem we are experiencing. The skunks come in from the right, and are blasted with the starting at least 8-12 feet before where the stinky bugger stands in the picture, and he ambled up to within 2 feet of the unit before tucking in and helping himself to a quick meal. I’ll keep watching, but I think this was an expensive failure.Next, I’ll the motion-activated sprinkler. We’ll see if we have any better success with that.If you decide to try this on your own, the instructions warn you not to aim it into neighboring yards, public areas, or caged or leashed animals. I believe this is sage advice - it’s loud and irritating, just not to skunks.----I was feeling bad about giving it such a low score, so I turned the unit up all the way and was hoping for better the following evening. At 10pm I checked out the camera and a huge skunk was there completely unaffacted by the sound. I was still dressed, so I ran out and grabbed the hose and shot the smelly dude from 30 feet away or so, and he ran faster than I have ever seen a skunk move. So in spite of my regret for givnig a low rating to this product, the low rating was well earned.9/27:We were surprised that the raccoons actually were chased off by the noise. So I upped my review - the skunks were our target for this, but we don’t want the raccoons almost as much, so good on the yard Guard.