Instruct: Classify Amazon reviews into positive or negative sentiment
Query: NOT working as advertised

Contrary to its advertised, supposed effectiveness the cleaner has consistently failed to remove tea stains or baked-on foods such as lasagna. At that, it's not worked better than other, less expensive products. Apparently, the reviewers praising it must have been under some sort of influence, and most certainly not the influence of this product's exceptional effectiveness.