it sure is for them. They even let me pet them for food. I don’t overfeed them by any stretch of the imagination. I do want them to be able to get along without regular feedings in case they run away or something. Yes, I feed them twice a day, but not humongous amounts.
It is for ANY kittehs. LOL! Shaking an old coffee can filled with dry food is how we get our outside cats to come home when they go out. They come a-runnin’.
Food is how I’ve tamed all the ferals that have shown up over the years. It starts with them allowing you t pet them while they eat, then they realize it feels good ANY time and you’ve got ‘em. :-)