Instruct: Classify the given review into positive or negative sentiment.
Query: VERY difficult to keep clean

I've had this cookware for 5 years and am very disappointed with it. The ridges, while they may be great for cooking, make it almost impossible to keep clean. I find this especially with the fry pans, since that's what gets the most things stuck in the grooves (eggs, meat, etc.) Circulon has produced a scrubber to address this problem, but that really isn't much help. I'm on this site looking for a replacement set.