Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very good product

The sensor really worked! I have 2 very curious kittens and I was afraid they would attach my Christmas tree. I purchased 2 sensors. It trained the kittens to say away from my tree. I was even able to turn off the sensors. Their mere presences was a reminder to the kittens to "stay away" from the tree.Word of advice, be patient with the sensor. It would activate the second the your animal walks by it but, it WILL activate within 3-5 seconds.