my cat puked all over my weighted blanket a few months ago. I just ran a hot bath, got some heavy cleaning soap (for like carpet, usually what I use for cat puke) and a scrubber brush and scrubbed it off in the bath a couple times until it looked clean. Tried not to wet the parts that didn't need it because it would take longer to dry. Hanged it over some chairs on the balcony to dry off in a few days.