Instruct: Classify Amazon reviews into positive or negative sentiment
Query: HORRIBLE

This had such amazing reviews and I wanted to believe it would work on my rough feet, but it didn't work at all. It actually fell apart and cut my foot really badly when I was using it. I don't understand how everyone else got it to work so great, but it didn't work for me at all and I threw it in the trash. I wished there had been real directions and even though I found a simple how-to video online it still didn't work for me.