Cookie jar

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The Reusable Containers Storing More Than You Think
You refill those glass and plastic dry-goods containers again and again with cereal, cookies and flour, but how often do you wash them? It turns out they're one of the germiest items in the kitchen and can carry salmonella, yeast and mold, according to the 2013 NSF International Germ Study. Clean the container and lid after every use (especially any rubber seals), using hot water and dish soap, the NSF recommends.