Program Files-Care Hundreds of care categories to choose from. Do not bundle or rub files together, or leave them in a pile or loose in a drawer. Files are easily damaged by banging against one another, as this dulls them almost instantly. Never buy a file at the hardware store that is tossed in a bin with other files, or has its protective plastic removed. When storing, protect file teeth by wrapping each file in paper or cloth, or hanging them. watch first