You don't even need a solution! My mom was having problems with streaks no matter what she used so she finally resorted to just using white vinegar, and it works GREAT! Try it! ... View related article.
I really hate to tell you this, but I went through this same thing a little over a year ago. It sounds like your cat is losing control of her bowels, which indicates kidney failure. Basically, you have 2 choices...you can pay for really expensive kidney food for her, and just make her comfortable until she gives in, or you can put her down. It's a really hard decision, I know, and I opted for the former decision. ... View related article.