Hob Heaven Cleaning Kit 3 Replacement Blades 5 "Excellent!" Mrs Roberts 18 August 2017 I bought this scraper to use on the inside of my glass oven door, I couldn't see a thing though it, now it is perfectly clear. I didnt stop there, my 'Lakeland free standing oven thermometer' had also become dirty with unremovable dirt, now that is perfectly clear. Cooking was a joy today as I could keep an eye on my food and oven temperature, something I haven't been able to do for a long time without opening the door. I haven't yet used it on my hob as I have managed to keep it clean.