Your washing machine may not be washing the germs out of your family clothes.  Over the years, washing machines can become contaminated with fecal bacteria potentially leaving millions of germs behind in your laundry.  To correct this problem, run the washer without clothes with using just hot water and one-half gallon of bleach.  The bleach will sanitize the machine and all it's plumbing components, killing any bacteria that's been left behind.