Instruct: Classify the given review into positive or negative sentiment.
Query: Tattle Tale Pet Alarm

The Tattle Tale Sonic Pet Alarm does not work as I had expected it to. It "goes off" at unexpected times and does not go off when kitty is near. In fact, she looks at it and puts her pay on it!.I'm just so disappointed as I purchased 2 and they're in a drawer. Guess I just threw my dollars away.