How to get dog pee out of couch cushions!?

RustyDusty said
The covers are very taught over the foam. How would I cut the cover and then fix it back to where it looks correct?

Usually the cover has a zipper on one side. I replaced the foam in our sofa and 2 love seats cause the foam was too soft. Turn the cover inside out and roll the cover on the new foam. Works like a charm.