URGENT How to get pee out of this cushion?

[GrumpyOldWoman2]

Posting here for traffic - DD has weed on our couch cushion and I’ve put cover in washing machine but I have no idea how to get it out of the actual cushion. It’s quite dense and thick so I’m not sure a liquid vac would do the trick? It’s the same style as the photo. Please help!!

washing machine?

Would it not go lumpy? Anytime I’ve put a pillow in it’s gone lumpy. Also it’s a pretty big cushion so not sure if it would fit.

Soak for a while in a solution of water and white vinegar. Then allow to dry fully outside. It's the bashing about in the machine that forms the lumps.

If it’s dense foam, it won’t be particularly absorbent. It’s basically plastic. Soak it in lots of water to dilute it, then dry it thoroughly in the sun.