Bests & Worsts Reviews from Amazon

Admittedly we have only had it for a few days, but our dogs responded at once. We had trouble for years with them barking when someone was leaving the house (even though other people were still in the house!) or when visitors or delivery people arrived. Every arrival and departure was a major event, noisewise. If one dog started to bark, the other one felt compelled to join in. We tried other measures to control the excessive barking, but to no avail. This device worked instantly. The dogs bark once or twice, CLEARLY hear the sound although we can't, and stop barking immediately. The house has never been so quiet! Our dogs are Pembroke Welsh Corgis, a breed which is known to have sensitive hearing, and when used to herd are trained using whistled commands. I noticed from reading other reviews in which people mentioned their breed of dog that other herding dogs (like German Shepherds) seem more apt to respond, whereas non-herding breeds (like terriers) may be less responsive...no proof, just an impression from my research. Update on Feb. 22, 2008. This product continues to work well, and our dogs have adjusted to it. Initially they were a little cowed and appeared distressed by what, to them, must be a very unpleasant noise, but they quickly learned that one bark was OK, two was a no-no, and a gentle woof (if they really needed to make a noise, which they occasionally feel they must do as part of their duty to the family) wouldn't set off the alarm. Today it snowed here, and our neighbor plowed our long driveway, which is normally a very noisy affair, dogwise, but there were only a couple of subdued "woofs" as the dogs did their jobs of alerting us to what they perceive to be an intruder on the property and then went back to sleep, rather than continuing to bark until they exhausted themselves, and us. Our house has never been so quiet! I am delighted with this product, and very happy that our dogs have adjusted to it so quickly, and am amazed at how quickly they figured out how to "express themselves" discreetly, when they need to, without going overboard and driving us all crazy! Of course, corgis are pretty intelligent and trainable dogs, and I am as impressed with the breed as I am with the product!