Lava rocks leaving dust?
I have been using lava rocks in steel bowls in my oven a few times, and have this annoying problem that it leavea layer of fine sand/dust in the bottom of the oven.
It does not get to the bread, so it is not a problem for that, but it leaves alot of potential for scratching the surface in the oven, and is really annoying.
Is anyone else experiencing this? Or am I just using the wrong rocks? These were sold as filtering rocks, but I can buy new ones that are for gas grills. I just want to make sure it is not just what these rocks do, before I go buy new ones.