Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for one, possible two hours.

Our dog ran to his water dish and washed his face. The collar stopped the barking for a couple of hours and then I think he ran out of citronella, so I refilled it and tried it again a few days later. Same thing. It worked for a couple of hours and then he was back barking again. So, it works for a few hours only, maybe for a party or something?