Q: Would there be an issue using a high heat dishwasher where meat and dairy dishes are being put together with a significant amount of meat and dairy waste, not for the purposes of eating, but still being cooked together at a temperature higher than boiling?
A: Indeed this would be prohibited as you would be cooking the remnants of meat and milk together. Most Poskim proscribe, even when detergent or any other unpleasantly tasting chemical is added, (see. However Yabia Omer 10). Using the same dishwasher but not concurrently for meat and milk utensils is also problematic, even if the interior is stainless steel, since it is hard to clean from residue properly and also the hoses, fittings, pumps, etc. cannot be correctly kashered.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit"a
Important Numbers
