What are you guys using to clean your sharpmaker stones. I haven't found much in the way of cleaners with out bleach in them. one i have i like is bon ami. Bon Ami. its not to bad. but i cant get the stones super clean wit it. i still see some metal marks on it. i may need a rougher cleaning pad. I'm using one like this 3M US: Product Catalog:*All Purpose Cleaning Pad. but a American made mejier brand version