Why is tupperware wet coming out of the dishwasher, when plates and glasses are all dry? Why do tomatoes stain in a dishwasher? What makes something dishwasher safe, or only top rack dishwasher safe? How are industrial dishwasher so much quicker than the ones at home? Which uses more water, using a dishwasher or hand washing?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: napalmfires, storypenguin, ieuantemplar, nomisnairda, warlocktx, hagenaar, where_da_party_at, voiceofchris and andcarro

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