Our cat peed on this rug in our den. I have no idea how to attempt to clean it. Any ideas? It's wool. The stain has dried.

Secondly, does anyone have experience with a cat peeing on carpets? He has no medical condition. He had a urinary tract issue about 6 years ago, but he's totally fine now. It's behavioral. DH is ready to re-home him.

Also, only constructive feedback, please. No bashing the idea of re-homing. We have a toddler, and need to consider safety/hygiene.