Instruct: Classify a given Amazon review as either positive or negative.
Query: Worked great for our Beagle

We have a very stubborn beagle which up to this point has thwarted all of our efforts to train him. By nature, he is a constant barker and quickly learned to bypass the citronella spray collar and was right back to barking. He's also a food hound and can often be found counter surfing. Once we purchased this collar, it wasn't long before he realized his howling days were over...not to mention the counter surfing as well. The only downfall is that the batteries ran out rather quickly, so I'd suggest ordering extras. Although, he's been on his good behavior even though the collar hasn't been on...we just need to keep it on hand though, because it's only a matter of time before he reverts to his old antics.