Every now and then, I spray it down with a garden hose. Obviously, that doesn't get the inside too clean. I also give the center section a light scrubbing with a brush, but again, I don't try to get it really clean, just anything loose or flaking. Beyond that, I have no interest in making it any cleaner. I keep a better eye on the lid because that has the potential to flake off on my food (nasty). The grates and the lid are about the only thing I spend time on. I think if I wanted it cleaner, I would do the high heat burn and then a brush. If I wanted it really clean, I would use oven cleaner and get it back to the porcelain (I don't want it that clean).