My senior cat seems to have fairly runny stools as his normal state. He is on Whiskas wet (2 sachets a day) and RC sensible dry (one scoop per meal). He’s healthy in himself and has a good coat, very active, complete scavenger and will steal food given the chance. Any tips for helping his stomach settle more. The shelter seemed to think he was fine with Whiskas (we’ve had them 8 months now) but I’m wondering if I should move him to something else. I’ve seen people mention the pro-kalin but there’s a paste and a powder? Does it matter which or would a general probiotic type powder help? Trying not to go insanely expensive as I’m feeding three and one is already on a full renal diet!