Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Don't buy the Mosquito Magnet

I am on my second unit: the first lasted one season and it took a whole season to get it replaced. They do not perform as advertised. I suspect them of stalling until the warranty expired and then offered a replacement for half-price. Would not buy another unit. Quality is bad; service is bad; they don't work as advertised.