IAMS Advanced Nutrition Hairball with Chicken - cat dry food

Very good kibble with a good composition, unfortunately it didn’t solve my cats’ hairball problem. They’re still vomiting just as much.

I bought several bags without any issues, my cats ate well and had less vomiting. But the last two bags I bought, my cats haven’t eaten well. They’re eating much less and poorly, leaving tiny bits of kibble in and around their bowls... Has the recipe changed? I’ll go for ADVANCE next time!