Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The most frustrating of baby eqipment

My wife and I decided, since we were having twins, to spend more on a bottle warmer than we did when our daughter was born. We bought this bottle warmer, and we have found it to be unreliable, and, even, unsafe. First, sometimes it cuts off for no reason, sometimes it will not even turn on. Several times, the milk is scalding hot, so we have to wait minutes for the milk to get down to a drinkable temperature. Take my advice - do not buy this product. Warm water in the microwave, and warm your bottles that way.