I've forgotten about mine too. It's way in the back of a cabinet. Need to get it out again, especially in the summer. I also used the paper towel method, and it worked good. I do the same thing on my waffle iron.

I have two GF grills. The first one is bigger and I use it if we have a lot to grill. I use the paper towel soaking method to clean it. The second one has the removeable grills. I love it. I use it mostly because it is easier to clean, plus with just two of us, I don't need as much grilling space.