I adopted my kitty Radar from the humane society when he was 6 weeks. He's now 6 months and still had soft stool/diarrhea. I've taken to the vet and after parasite tests and probiotics and me taking a sample of his poop to get tested the results have all come back normal. My vet suggested the hypoallergenic royal canin dry food. I tried for two weeks and it worked, but it's super expensive and I also have read some things about it not having meat and isn't good long term. I ran out and haven't been able to buy another bag so he's back on regular cat food and his diarrhea has returned. I don't know what to do. I can't afford $50 a bag, but I also want the diarrhea to go away. Any suggestions would be appreciated.