<human>: Can you condense the text into a few key points?

So my cat has a leaky butt. We adopted her in November 2013 from a shelter, her age was estimated at 5 years old. She constantly has poo stuck to her behind, it is really making having her difficult. Aside from the obvious smell, she leaves marks from her butt when she sits anywhere, making my bf and I not want to have her hangout with us. We have to keep a extra blanket on our bed and we just got a new couch and it has to be covered too just in case.

 We took her to a vet, he said that because she is a little overweight it makes it difficult for her to clean herself, also she is a domestic long hair so her hair acts as a net to help catch it. We previously had a roommate that had an overweight domestic long hair and it never had any issues with having a clean behind. So the vet shaved her behind for us and said that's all we can really do. I have given her a few baths with pet shampoo to try and clean back there for her but its really caked on so I would need her to sit in a tub of water for like 20 minutes to loosen it up so I can get her completely clean, but my cat is not a fan of sitting in water, obviously, plus I would honestly need to bathe her daily but that's so time consuming and could dry out her skin and irritate it. 

 She doesn't have any digestion issues so I'm not even sure how it gets stuck back there. The only other thing I can think of is to get baby wipes and wipe my cat's behind every day for her. She is such a sweet cat and I don't think I could give her back to the shelter, but I can't have her ruin our furniture and I don't want to wipe her butt everyday. What do you think Reddit? Thanks for any advice!
<bot>: My cat's behind leaks and is covered in poo, not sure how to keep her clean and don't want to give her away.