I hope you are not giving the kittens cow milk. Cow milk isn't good for their digestive tracts. they sell first born milk for kittens. That is what I am now using for a kitten who was abandoned by it's mama. I soak her dry kitten food in the first born kitten milk, and then allow it is soften, then I let her eat it. She is actually doing awesome. I decided to name her Isabella. She is white with gray markings.