So I just purchased some cook's standard triply pans. This is my first foray into the world of Stainless Steel cookware. I've read a lot on CH about the miracles of BKF. However, based on reading through threads, I'm still a little unclear about how people use this product. How frequently do you use BKF on your SS? Every time you cook or just occasionally when you feel the pots are looking dingy? Also, do you use it mainly on the exterior of the pan or both the interior and exterior? Thanks for any help the CH community can provide.