Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Horribly Ineffective

Since I'd been having trouble staying awake during the day, and I didn't want to take up coffee drinking on caffeine pills I decided to look into peppermint oil, as I'd recently read that it was supposed to be just as effective when inhaled as caffeine, without the risks.I looked over several products before settling on this one, as it supposedly had other natural scents known to produce alertness.Unfortunately, as soon as I got the product and put it to work I found it completely ineffective. It had no impact on my level of alertness, and I was just as drowsy as ever. I don't know if it's just me, or if the product itself doesn't have the proper concentration, but the product was a complete failure for me.