If you're in the habit of clipping your fingernails and letting the trimmings go down the drain, stop. While fingernails are composed of organic materials called keratin and biotin, nails really do not biodegrade, so trimmings can clog drains and cause problems over time. And because they are so strong and durable, using a chemical drain cleaner won't actually break them down or make them go away. Instead, try trimming your nails outdoors, or just put the trimmings in the trash.
ANDREWS MCMEEL SYNDICATION