Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HUGE disappointment

After reading all the reviews, most giving this Dr Scholl foot spa very good to XLNT ratings, I purchased one for my wife as a gift. First disappointment: you cannot add any foot softeners to the water, it will "clog" the air jets. It advertises 'smart heat' but the warm water cools off right away. But WORST of all, the air jets quit working on one side right away, which you don't expect with a Dr Scholl product. There is also no "massage", I guess the air-jets that don't work do the massage? It does have a 2-year warranty, BUT you must MAIL it to the Co, postage paid PLUS enclose a $15.00 check to cover handling! So are you s'posed to pay as much to get it fixed as it originally cost? A HUGE disappointment, and I do NOT recommend this foot spa to anyone.