Am I the last person on earth to know this?
I like to buy laundry detergent in the large jugs. I disliked having to rinse the measuring cup after using but if you didn't the jug gets pretty messy. Well, I have a front loader and have been leaving the measuring cup right in the machine where you put the detergent. It easily fits there likes it is supposed to be there and gets rinsed out clean. I just leave it there all the time. I've been doing this for 6 months now with nothing bad happening to the machine.