Hi, I'm redoing a guest room for a family friend. I'm keeping the budget down and just changing the hardware on his dresser. The drawer pulls that were original left circular rings on the wood. It seems like I should be able to scratch them off with my fingernails (they are very faint.) Is there a product that anyone knows of that would work for this? I was thinking of a magic eraser, but wanted to see what the pros say. Thanks in advance!