There are a lot of variables involved when measuring hand washing and automatic dishwasher cleaning of dishes.

But if you’re feeling guilty about your nifty kitchen appliance, take comfort in the University of Bonn’s study. This careful study included 113 participants and attempted to control as many variables as possible.

The German study found that dishes cleaned by modern dishwashers were not only cleaner, but that the dishwasher uses less water, energy and soap. Plus, there’s the significant time savings involved with dishwashers. And that’s important if you want to read your favorite blogs!

Get more details from Bonn: A European Comparison of Cleaning Dishes by Hand. The first article under “Publications” explains the experiment in detail.

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