Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
Have used the Exopat since Christmas 2006.  It does work well, helps baked goods (generally cookies, though we have made frozen pizzas and other things, too) cook evenly and slide off evenly.  Actually, that's it's best part: even burned cookies slide right off.  The problem is cleaning.  Any oils in your baked goods will become semi-permanent on the sheets.  It is indeed very hard to clean, though I don't see any degradation in performance even when it is dirty.  It may be the California dustbuster/wrought iron skillet phenomenon: the dirtier it gets, the better it works.  Other than the re-usable feature, I can't see a huge benefit to these pads over parchment/wax.  And when it looks so filthy you don't want to eat off of it, that feature is less significant.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: C: neutral