Even if you have your laundry routine down to a science, you might not even know that your washing machine has a lint trap—much less that it requires regular cleaning. But, much like your dryer's lint ...

Add Yahoo as a preferred source to see more of our stories on Google. Damian Lugowski / Getty Images Even if you have your laundry routine down to a science, you might not even know that your washing ...

For something that does so much cleaning—washing is actually in the name—your washing machine isn't very clean itself, says Jennifer Ahoni, principal scientist for Tide and senior scientific ...