Instruct: Classify a given review into positive or negative sentiment.
Query: Messy to use

I bought a pair of these at Whole Paycheck Market. I'm disappointed. Remember, they make potholders out of silicone. It's a good insulator. My big beef is filling them and putting the full tray in the freezer. What a mess! You also have to work for your ice-cube to get it out. Lastly, they are not perfect. One cube pushes toward its neighbor, so they end up being sorta, kinda perfect. Were the tray hard and inflexible, perfection would be closer. Keep searching.