I have gotten mildew out by using bleach in the wash water. In order to prevent any bleach spots, I mix the bleach first into a cup of water and then pour the water into the washer as it's filling up. That gets rid of the smell too.
At the very least you could try this first. If it doesn't get the spots out then I'd throw them out.
" I object to violence because when it appears to do good, the good is only temporary; the evil it does is permanent." Mahatma Gandhi
"This is the ultimate weakness of violence: It multiplies evil and violence in the universe. It doesn't solve any problems." Martin Luther King, Jr.