F'in Pets ShopVac Adapter (Freakin' of course)

Pet puke, piss and other funness! The family cat was hiding out in the guest bedroom the other day and the door got shut. After being stuck there all day, she had to pee and decided to do it on the down comforter. I get it, I'm sure she tried to hold it, but has anyone tried to wash a queen size down comforter? My plan is to use the shopvac and this to suck cleaner and water through the comforter, with fingers crossed I hope it works