For the furniture itself, you might want to use a fabric protector spray to make it less absorbent to any accidents. But, if the couch is really starting to look rough despite your best efforts, you might want to consider professional cleaning. Chicago Couch Cleaning https://chicago-couchcleaning.com/ offers upholstery & carpet cleaning services in Chicago, and they’re pros at handling pet-related stains, odors, and hair. I had them clean my sofa after my cat had a little "accident," and it came out looking brand new. They really know how to freshen up your furniture, so it's comfy for both you and your pets!