Unfortunately this barking device can’t be used on 4 month old eleven pound puppies. Had to return it. Looks like the collars is well made and would work.

Perfect for strong barkers, effortless to set up! I never even saw him react to the collar. He simply stopped barking! My large dog watches out the front window and before using this collar, he would "alarm bark" at the littlest things. Once barking, it was very hard to get him under control. Now, using this color, he gets much less worked up over things! He sometimes lets out a little "woof," which I'm totally fine with. Now, when people come over, he isn't nearly as worked up and that allows us to give him positive encouragement, making the situation happy, light-hearted, and helping him get comfortable with people much faster. This has been a game-changer!!!*In the beginning, you will need to let your dog bark at things so the collar can adjust to the proper setting. I didn't think it was working at first. Then I realized he just wasn't barking anymore!

We used it for a couple years while training our puppy. She barks A LOT. This collar worked as described and kept her from barking.

Easy to use and very effective. Changed my dogs barking behaviour instantly.

This collar deserves a through review because it’s much different than all the others I've tried.When I decided to try a bark collar, I started with trying cheaper ones on Amazon. If a $30 collar is gonna do the trick, why spend almost $100?ISSUES WITH THE CHEAPER BARK COLLARS:1. They were too sensitive or not sensitive enough. I couldn't find a reliable in-between. If the sensitivity was too high, the collar would either go off from background noise or from the jingle of his collar. If he was playing with another dog, it would also go off at the wrong times.2. Shock levels were either not enough shock or WAY too much shock. We tested it on ourselves and it did not gradually increase shock, there was a big jump on some of them from a static zap to OMG THAT REALLY HURT3. Not water-proof. Winter snow + cheap collar- non responsive unit. I'm sure overtime rain or even a small splash in a puddle would break most of these units.HOW THE COLLAR WORKS- 3 SETTINGS:1. Manual- you set the shock level and it will always shock at that one level2. Temperament learning- Similar to manual mode except the bark collar helps you decided which level is best. It will increase shock values and remain at that level once the dog decides "nope, I'm not barking anymore that one hurts too much" So if level "4" is the level your dog decides it not worth barking at, it will remain at level "4" for future barks as the optimal shock level.3. - Progressive Learning- Also increases shock value as your dog decides to consistently bark. When your dog stops and remains stopped for several minutes, the shock level goes back down to 1 for the next time your dog barks. This is better if you want to always start at the low level so the least amount of shock is delivered to begin with. This is what I use for my small dog.I USED IT FOR TWO DIFFERENT SIZED DOGS AT FIRST:When I first bought the collar, my dog was barely 7lbs and around 6 months old. Toy poodle. The collar wasn't working for him. He would give a loud strong bark and it wouldn't go off. It had an accuracy rate of around 40% I decided he was too small and put it on my 40lb dog who it worked wonderfully on. The 40lb dog barks only at cats in the neighboring yard, but the poodle barks at every noise, person, animal, etc...I spent the next 6 months trying to find another collar that worked for the poodle. Nothing was a good fit. The ones with a warning "buzz" before hand allowed him to figure out ways around not getting shocked. I gave each collar 3 weeks and they all failed. The good collars he would outsmart and the bad collars never seemed reliable in the first place.So now 6 months has gone by and my 40lb dog has been able to go without a shock collar and his barking is no longer an issue. I decided to try to collar again on the now 1 year old 10 lb toy poodle. It worked BEAUTIFULLY!!! It hasn't yet falsely shocked him, and it is reliable every time he tries to bark. He understands that barks=shock. His anxiety has decreased significantly and he has learned to greet people at the door silently but still friendly and exited- only he doesn't bark along with it now.Why didn't it work on the Poodle the first time?I believe the issue I was having before with poodle was that the collar was not fitted correctly on him. It has to be very snug. The sensor for this collar is between the two prongs. Very different than all the other collars I've tried. It uses vibration from the vocal cords to know when the dog is barking. You should be able to fit one finger under the collar, but that’s it. If it’s too loose, the collar cannot feel the vibration during the bark and therefore not trigger the shock. The collar does turn a bit sideways sometimes but it still works fine when it’s not perfectly centered below his chinCONS:1. It is not the same charger as any other electronic device you own. If you lose the charger, ya gotta buy a new one and it isn't cheap. I wish it was a mini usb charger like everything else in my house that has a rechargeable battery.2. The collar is very stiff and hard to get stung at first. It’s the buckle collar type and I've always found that it’s gonna be a little TOO tight right before you fasten it and my dog freaks out sometimes when I'm putting it on.