There is also one in the shopping area by Mount Vernon, near the Price Leader store, if I remember correctly. Didn't go close enough to see If it was a self service or somewhere that washed for you.
There is also a new place on the entry road to the school in Grand Case. Enter the one way road as if going to the school, pass the school & the laundry is just down a bit on the right. You can have it done or do it yourself. There is a button on the outside wall that opens the door.
If life hands you a lemon, just squeeze it on a lobster!