I recently adopted an 11 year old dog and I was told the previous owner used a bark collar on him. This dog DOES bark a lot--when left alone, when out in the yard, in the car while driving, etc. Some of it was anxiety, which is much better now, but a lot of it is excitement which is fine, but not in your ear. It's been tough to train him because he has a lot of hearing loss. So I got this collar and set it for it's loudest setting for the beep and for vibration--I don't need the shock setting at all! It works like a charm! Since he obviously had previous experience with a bark collar, he knows when this goes on to limit the barking or whining. He can usually get out one bark or low whine and then he stops. He's learning to do all kinds of fun stuff with us now as long as he limits his barking. It's a win win for all of us. It holds it's charge QUITE a long time--we camped for 5 days and he wore it during the days--had plenty of charge left when we got home. It's easy to figure out the settings and the display is clear and easy to read. Easy to charge--just make sure you use the cord that comes with it, it's a little different (longer plug) than a typical micro usb. The only negative I've found is that when he does a big head shake (he's got long floppy ears) I can hear it go off. But since I've only got it set for vibration and tone, that's ok. It will also go off if he's wearing it when sticking his head out window--the sensors are getting pretty windblown--at about 55 mph--makes sense. It's not very frequent either. I would DEFINITELY recommend this, especially using only vibration/tone. :)