I use the Scotch green pads, but usually use the ones that are getting worn out so they're softer. I also use a plastic scraper sometimes to remove cooked-on gunk, or let the pot soak a while to loosen cooked-on food.
The only damage you could do would be to the seasoning.
A forum community dedicated to the frugal lifestyle and the enthusiasts. Come join the discussion about simple and green living, cost effective tips, life hacks, debt reduction, recycling, gardening, other homesteading techniques, and more!