Ultrasonic Pest Repeller, Electronic Pest Repellent Ultrasonic Plug in, Pest Control for Bug, Roach, Spider, Ant, Flies, Mosquito; Bug Repellent Indoor for House, Garage, Warehouse

I’ll start by saying that I’ve bought a lot of stuff off of amazon, but this is my first review. Here’s to hoping you find it informative and entertaining. The thing comes out of the box with clear instructions and no fuss getting it going. Just plug it into the wall and select one of the three settings. Green/Low Mode=no audible noise. Blue/Medium Mode=no audible noise. Red/High Mode=screeching terror for humans, pets, and pests alike.Results:I used it to try and get rid of what was, in my estimation, about 20-30 insect eating bats that were in the ceiling of my vintage 1960s single-wide. Before I plugged it in, you could hear the hive rustling about and using their echo-location voices. Prior to purchase/installation, at the rate of about 1/week, I had bats enter my living room for a no-holds-barred showdown for dominance. Luckily for me, bats are very ineffective in a pillow fight, and each challenger met his/her doom with a brilliant flourish much to the appeal of the coliseum crowd of my wife and dog.After these occasional battles, my wife decided to buy the product in an attempt to end the gruesome spectacle. For about 2 days after I plugged the thing in and set it to the blue mode when I was home and the red mode when I was away, as the directions suggested, I noticed no difference. The bats remained in their ancestral homeland and taunted me with their squeaks and squawks as they continued to assert their dominance. But then about 2 night later, everything changed. I awoke in the night after what felt like a sock dropped on my face at about 3 AM. I quickly swatted it from my ajar and snoring mouth and turned on the light to assess the situation. When the lights came on I realized what was occurring. AMBUSH!! The bats had not been merely echo-locating in the ceiling since my purchase, but were planning their attack to take over my family’s single-wide for good! How could I have been so complacent. In the faint glow of my bedroom’s light fixture, I spotted 4 bats flapping around the room with malicious intent. Their plan was sound, as my normal gladiatorial armor was in the laundry bin after a long day’s work, leaving me in only my bare feet, boxers, and oversized sleeping t-shirt. I had to make do with what I had. Both my wife and dog sprung into action. My wife started screaming loudly, in what I now realize was an attempt to jam their echo-location (smart), and my dog leapt onto the bed and began jumping up in a futile effort to snatch them out of mid-air, her jumping abilities were not adequate to aid in the fray. As the battle began I grabbed two pillows and began a rapid wind mill motion with the cushions. Two bats immediately rushed me with supersonic synchronization, however, the rapid, two-pillow fan blade motion had not been seen by their ilk before. They were quickly dispatched. I ceased the blur of motion after what had been a physically taxing tactic. Realizing his opening, the third warrior sped at my head, but I was able to duck and utilize a back handed swing of the pillow in my right hand to send him violently into the wall. Then there was one. A battle of wills ensued, it was one-on-one, mano y mano. The final bat was clearly the leader of the pack as his swoops and flaps were made with great vigor. The melee continued until the final warrior was slain, and my body was exhausted. I wiped the sweat from my brow and gathered the bodies of the fallen. As I laid the warriors to rest, I had realized that my purchase had led them to such a desperate attack on me and my family.Over the next few days, the rustling in my ceiling had stopped, and I realized that the elder council of bats had decided their territory was no longer able to be held. This decision was made based on the incessant super-sonic noise of the product and my superior combat prowess. They had moved on. The only remainder of resistance came from one cunning and wrathful, albeit young and rash bat that laid in wait for me on my shower curtain, presumably to dispatch me while on my porcelain throne. Unfortunately for him, my trials in battle had made me a hardened, bat combat veteran. He too met his end. Brave fool. Since the final skirmish, I have had no more invaders. I only hope that this is a permanent peace, and not an opportunity for the bats to regain their former combat power and unleash an even more powerful offensive.Overall, I can’t say whether my heroic exploits or the product were the most effective, but I’ll give it the benefit of the doubt. It works as described. With its aid, I have won the great bat war of 2020.TL;DR- Excellent product. Highly recommended, the bats literally came out of the walls.

UPDATE: after a month or so of use all 3 purchased devices keep automatically turning back down to green level, despite me continually setting it to the blue level. Not only that, our entire house is swarming with moths and gnats. My original problem? Well, let’s just say this is a big joke. None of the three devices actually do anything for either moths, lizards, gnats or fruit flies. Not sure if I have defective units or if their life span was only a month or so, but either way this was a huge waste of money. Don’t waste your money and look for another solution!Living in a humid climate, during the last few weeks I noticed a lot of lizards getting indoors and for some reason, a lot of wasps entering the house through the chimneys. I bought 3 of these devices and installed them in relatively open areas hoping that the walls don’t impede the ultrasonic frequencies.Our home has an open concept in the main living areas and very high ceilings which open up to the gaming room and the bedrooms upstairs. I was hoping one of these would take care of the game room upstairs and the entire living space downstairs.I have placed them for about two weeks and while I did catch lizards on a glue trap we purchased, I do notice that non of the wasps who enter through the fireplace like to stay downstairs! They always go up to the game room and drop dead!I also unfortunately have a moth infestation due to all the COVID dry food we stocked up on and I would have LOVED to be able to kill them off as they’ve made their way into destroying hundreds of dollars of food, but unfortunately I do not have an outlet to plug this in there!It is true though, the walls do impede the sounds and thus reduce the efficacy of these devices. The green and blue light settings have completely silent functioning but the red has a very annoying buzz. You definitely want to be out of the house when you switch it on to red. Otherwise they’re very easy to operate and seem to be effective though I haven’t reached the full 4 week period of adjustment. Definitely hopeful though!