Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Keeps my dog in line

I have a 2 1/2 year old labradoodle who still acts like a puppy on our walks. When I lost her last Starmark collar, she started pulling hard, disobeying commands, and stopping whenever she wanted to smell something. Now that she has a new collar, our walks are much more orderly, and a short tug reminds her to heel. The collar doesn't hurt at all - if you put it around your arm and tug you can feel the pull, but it doesn't cause pain. This collar is especially useful for my kids, who otherwise have a hard time walking the dog. The only downside is that it can be hard to put on and take off, especially when it's new, since the links are very tight. Once it's on, it doesn't come off though. Overall, I recommend it highly.