Instruct: Classify a review into positive or negative sentiment.
Query: High Maintenance Required

This product initially worked great. After a few months, it required cleaning, which unfortunately, the unit is not designed properly for. After a year, it just produced extremely dirty (smudged) labels, of which no cleaning could fix. Two friends bought the same unit, and each had problems after a few months. Not a quality product. I'm sorry that I bought/recommended this product.