Steps when cleaning an OVEN 
Important ⇉ The supermarket oven clean will always work faster & easier. It can damage you and your surfaces very easily, that's why i don't promote it.
SHYN Grime lifter - Takes away the heavy scrubbing on racks and trays, if you don't have it, it's ok here is your solution, if you DO have it, read the additional steps 
- Fill up your sink with HOT WATER 
- Put one scoop of Grime lifter per 1L of water
- Mix the crystals into the water with a spoon, creating a pool of grime eating solution
- Allow the racks to soak into the solution for 30 minutes
- Remove any remaining remnants on the racks using your steel scrub. Use your grout brush for the corners of the racks to remove the stuck in grime
- Spray your racks with SHYN degreaser, then rinse under running water remove the product residue, use the microfibre to help make it faster to rinse off