Carbonex is commercial stuff from Forward Chemicals here's a bit off their website, it's powerful stuff, gloves recommended!
CARBONEX 250 BIODEGRADABLE
Removes Baked on Carbon, Grease and other residues.
HEAVY DUTY
CARBONEX 250 is specially formulated to remove baked on carbon, grease and other food deposits from ovens, baking equipment, utensils, food processing machinery, walls, floors and many other hard surfaces.
VERSATILE
CARBONEX 250 can be applied by brushing, spraying or dipping. CARBONEX 250 can also be used through steam cleaners, power wash equipment, tray washers and other automatic dosing equipment.
NON-TOXIC
CARBONEX 250 is non-toxic and no harmful residues are left behind after adequate rinsing.
NON-TAINTING
CARBONEX 250 does not taint and leaves all equipment odour free.
THIXOTROPIC
The thixotropic consistency of CARBONEX 250 allows application to vertical surfaces by either brush or spray. Its non-drip property allows prolonged contact with heavily soiled surfaces, prevents wastage by run-off and gives maximum cleaning power.
ECONOMICAL
CARBONEX 250 is very powerful and can be diluted with up to 250 parts water, depending on the degree of soiling. Typical dilution rates are:
Brush/spray application: Neat - 20:1 Dip tank: 3:1 - 20:1
Tray washing and similar: 20:1 - 100:1
Power washing and steam cleaning: 100:1 - 250:1
EASY TO USE
After brushing, spraying or dipping, allow the solution time to penetrate the soiling and rinse off with cold or (preferably) hot water.