For a long time now we have been using Royal Canin "Oral Sensitive" (Food #1)....everyone loves it...and it's been great! Then hubby decides to also get Royal Canin "Intense Hairball" (Food #2)....because 3 of the cats are long hairs and he wants to alleviate the hairball situation for them.

They ate both foods for a couple months....the past week or so, food #2 wasn't being eaten much if at all. We had them in 2 different bowls.
SO, I thought I'd get them something that was also healthy and I thought they might like that wasn't so involved with hairball. I got a sample package of "Blue Spa Select Indoor" about 3 days ago......(Food #3)....I put it in a different bowl; now there are 3 bowls down, both upstairs and downstairs!
Immediately, they ate Food #3, and have been eating #3 ever since along with Food #1..... And no problems at all with poops!
I'm not sure why they started disliking Food #2.....but, I'm going to discontinue it tonite. Food #2 has chicken
meal as first ingredient; Food #3 has deboned chicken as first ingredient along with veggies and fruits down the list.
Any thoughts on why the palate change? They're really not finicky eaters. And, why all of them have a 'beef' with Food #2?