I just recently got my first cast-iron skillet - which I have been wanting for a long time to make steaks and cornbread. I got a Lodge Logic 10" skillet; and I was surprised to read that the care instructions advise to not use any soap when cleaning. I'm wondering... how is that really cleaning? So, am I to understand that the only thing I do with my cast iron skillet is rinse it and rub off the food particles? To me, that does not sound very clean or sanitary. Unless I would "clean" it and then boil some water or something in it to kill off any bacteria, etc.? Or am I being overly cautious here?