Washed my QCK+ about 3 times in 5 years, hot water in a bowl (not boiling) rub soap on hands then rub on pad so you don't grind the soap directly onto pad.
you'll see the water turn murky (assuming you've used about 2-3 pints of water) , rinse it well and hang to dry and you'll have hyper clean hands as bonus.
They are very durable and can take more than you would expect.
No need to scrunch it, just a few shakes once its clean and hang to dry.