A thorough clean automatically Make it easy for yourself: HydroClean gives the stainless steel oven interior of your Miele steam combination oven a thorough clean automatically. The foam produced by mixing water with Miele’s innovative HydroCleaner soaks into food residues to remove them from the surfaces of the oven compartment. Even stubborn soiling is removed with ease, saving you the effort of scrubbing and leaving your oven compartment spotlessly clean.