Sanabelle Sensitive Chicken & Blueberries - cat dry food

My cat absolutely loves this food, however since giving her this food she has gained a bit of weight. I followed the feeding guide so have not been overfeeding her. The fat content does seem quite high, so maybe not a great food for cats with a tendency to gain weight or who are not overly active. I have changed to Iams and her weight is slowly going back down.

Both my indoors enjoy this food, had changed them over from Royal Canin as I had heard good things & there is a good price difference. The one major thing I've noticed from the change is their poop is stinking & there's more of it, much more of it. With them being indoor cats, I think I'll have to switch back over to RC.

I've been giving this food to my cats for a long time and everything was fine until they started changing the formulas without warning. The first time, my cats got sick with diarrhoea because I couldn't anticipate the change and switch them over gradually. This last time, the kibbles are really big and, on top of getting sick again, now they don't even want to eat it.