I’m currently in London staying with my brother and he is having a problem with his cats.
Put simply, they are obsessed with food. Any movement a person makes in the flat, the cats will go straight to the kitchen to be fed. It doesn’t matter what time of day, if they were fed 5 minutes ago or even who is in the house be it a familiar person or a stranger.
My brother said he tried a trick that he read somewhere to take away the bowl after they ate, but that didnt work. He tried IAMs (I’m not sure what that is I’m just the messenger) which didnt work. His relationship with them has changed a lot from when I last saw them, they used to be sweet loving cats, now they are literally crazy about food.