I've been experimenting with pumice cleaning sticks recently, and they are so good you need to know about these beauties. I've been cutting them down to whatever size I want, so I have skinny ones about the size of a pencil that make cleaning grooved sides easy, and bigger ones which do those awkward corners and ridges on roofs and annoying bits around the front. And even better, they do an amazing job on roasting tray corners that come out of the tank still dirty. I reckon they cut 30 minutes of my last double clean that had ridged sides. There's lots of scary stuff on the web about how they scratch toilet bowls etc, but I've been testing all sorts of enamels. Neff, Bosch, Beko, Leisure and no scratches. I just use my degreaser and paste as normal, then soak the sticks and use them wet on the awkward bits. You have to try them. Just make sure it's cleaning grade. The ones for your feet are completely different and much coarser.