There is a product back home that is brilliant, spray the oven and put the racks into a bag, leave to 3-5 hours, no scrubbing, come out brand new, I think its called Oven Pride, I swear by it, will bring some back with me.
I usually do this myself but my oven is in a terrible state after far too many roast ducks and the like and I could do with some seriously industrial help to get me back on track. The usual products are not doing the trick.
There are companies in the UK that use really strong chemicals and they also take out the racks and shelves and dip them into special cleaning fluid.
Anyone heard of anything similar here??
TIA