Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: complete waste of money,

These units are a joke! A bad joke! I have spent about $30 per mosquito trapped (actually more). When the starter button came out, they offered to let me increase my investment to fix it. Run away and talk to a pest control firm. This was a huge mistake. I live in Tulsa, Oklahoma. Basically the unit doesn't catch anything and it cost a tank of propane and a strip of octenol every month. Do the math. This is a scam.