Polyester Cat bed/Tunnel

Help! I have this large doughnut shaped cat tunnel/bed that our girl loves.

A while back she got a UTI and we went through all the fun things of that (peed in a tote of Christmas stocking and on the Christmas tree bag) got her taken care of at the vet and all is good.

Anyway she has this bed she LOVES to sleep in/play on. I’m not exactly sure if she peed on it directly since the smell isn’t heavy but either way it smells of cat pee.

It’s super stiff polyester and I’d love to throw it in my washer with some enzyme cleaner (no agitator in the center so it would fit) I don’t want to ruin it but I don’t think “hand washing” will be enough… any suggestions?

TIA