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Although parents know that there is nothing on this planet dirtier than a kindergartener, many common everyday items are covered with dirt and germs. Some of these items will be very obvious, like toilet seats, but others may surprise you. Common items that you encounter daily such as doorknobs, touch screens, shopping carts, gas pump handles and playground equipment are some of the dirtiest surfaces you will ever confront. Contact with these public surfaces are unavoidable and no one is willing to invest in the human resources and chemical cleaners needed to decontaminate these public surfaces. Cleanliness may be next to godliness but, despite our good intentions, many surfaces remain filthy and are constant sources of contamination.