T3-R Triple High Impact Mice, Rat, Rodent Repeller

If you are considering a ultrasonic repeller, especially in indoor applications, look no further. The reason is not only because this unit is quite unique, but also because of the customer service experience.First of all, this unit is unusual because it has three separate ultrasonic emitters. Based on the shape of the unit, my guess is that they do a good job of covering over 180* around the unit with 135+ db blasts of ultrasonic energy that vary in frequency but whose main targets are rodents like mice, squirrels, and rats. There are multiple operating modes, allowing you to test the unit (it squeals in a audible frequency range) or determine which transducers get to operate.But more importantly, when something goes wrong, Dan H., the seller, is there to personally help you troubleshoot. When he read I had issues, he contacted me immediately to figure out what may have gone wrong. He was very kind, helpful, and exclusively focused on making sure I liked the product, or my money back. Ultimately, that's what happened, he refunded me the whole package (including shipping), which is very unusual but which illustrates how he stands behind his product. Why do business with other merchants for ultrasonic repellers when you can do business with Dan?Anyhow, I initially gave this product only three stars because based on observations of the back yard, it seemed to work on some, but not all target animals. That is, I set up the unit, confirmed with the test mode that all was well, and went on my merry way, hearing the squirrels chatting angrily behind me. The unit itself is nearly silent in operation - some aspect of the ultrasonic noise can be heard, but it is very, very minor and presumably consists of harmonics. But then the local skunk and a squirrel happily started grubbing in my yard - and at least the squirrel should not have!Since I was leaving town for a couple of days, I disconnected the unit and wrote my review. Then I started conversing with Dan by e-mail and discovered what a caring merchant he is. Several days later, I got home and started troubleshooting. The first thing I noticed was the lack of the faint noise the unit should be making when plugged in. I checked the power, then suspected a bad power supply. Luckily I had a Velleman 3-12Vdc Adjustable Power Supply on hand to see if the issue was inside the unit or if the power supply had failed. Once I got the voltage, polarity, and plug size right, the emitter started right up, confirming that the small OEM power supply had failed. Dan assured me this was very unusual and issued a full refund (including shipping!) and didn't even want the unit back.I then retested the unit outdoors with the new power supply, and once again the squirrels were on the run. I even convinced a skunk to vacate the lawn (which makes sense, its hearing range is similar to that of squirrels). While chasing pests out of your yard or house is possible with this unit, I would also focus on minimizing habitat / food sources for pests on your property rather than relying on devices like this. After all, you too may suffer a power supply failure just when you weren't looking. So, if you have an attic filled with squirrels, it's likely not good enough to set up a ultra-sonic repeller. Long term, you should also close and seal access holes. Who knows, some day you may encounter a old and deaf squirrel who won't mind the noise coming out of the replier!In closing, I would recommend this ultrasonic repeller over any other unit sold on Amazon. Failures like the power supply happen to any product - but what differentiates one merchant from another is how they handle the situation. The reason I'd buy this over a competing product is that dan stands behind his product!

I typically do not do reviews, however have been so pleased with how these worked, I wanted to spread the word on how well these perform.Recently, we have seen a major increase in Norway rats. We live next to a pasture that is now under development in a large metropolitan area. We could not go out in our backyard without having our dogs a leashes, because there were so many rats in the backyard.We called an exterminator and had 4 bait boxes set outside as well as 2 in our attic. He told me it would take a while to start seeing a difference, as the rats had to eat the bait, then feed the babies, but this should work and the bait should last 6 months. Of course, this wasn't a quick enough resolution for me. I raise show dogs, and don't need diseases, fleas, etc, spread by the rats. I searched for more answers and found several websites stating when the infestation is bad, multiple repellents need to be used. I researched the ultrasonic repellers, and really liked what I saw with the T3-R. I ordered 2 of them at the end of the week, one for our patio area, and one for the pool equipment/storage building area and they arrived that Saturday. The directions were very easy to understand, and I had them set up in just a few minutes.I had read reviews that stated the frequencies didn't hurt the dogs ears, and for my older dogs, it did not...I have a young male, and he whimpered a little for a few days when I would let them out back, so I would turn them off when he was outside. Within a week, he became accustomed to the sound, and we no longer have to turn them off.The Friday before we received these units, I had the exterminator back out to check the bait traps, and ALL 4 OF THE OUTSIDE BAIT TRAPS WERE STRIPPED TOTALLY CLEAN!!!!!! These are the large outdoor bait stations that you see outside restaurants and hold 3 bait "logs." The exterminator stated he had NEVER seen the traps cleaned out so thoroughly that quickly, and he confirmed that they had only been out 2 weeks. He refilled the stations, and said he was interested in finding out if these worked, and asked me to call his personal cell phone if they did. I've got to call him and let him know we are thoroughly pleased with the results we have seen since we added these. The exterminator left a key to the bait stations so we could check them ourselves, and it has been a month now, and the bait has not been touched!I would say within 3-4 days, we stopped seeing evidence of the rats in the back yard, and the dogs lost interest in hunting the varmits. We also had a couple of storms that dumped 7-8 inches of rain within a 12 hour period, and as long as these units are not sitting in puddles of water and have some sort of overhang to block some of the water, these units have continued operating perfectly.Because of my strong desire and aversion to the rats, I had emailed the seller 2-3 times, and I have to say the customer service has been excellent! I am planning on ordering 2 more so I can have complete coverage around the entire exterior of my home. This area is seeing a lot of building and development, and I'd rather the rodents go somewhere else. From speaking to our neighbors, there have been rat issues in our neighborhood for the last 30 years...obviously, we weren't told this when we bought the house...so it's all out war on these 4 legged Devils!Thank you for giving me back our backyard! These have done everything they were stated to do!