“Best to leave with mother, if possible. BUT this has raised babies from eyes closed to eating solid food. They love it and once they get the hang of the bottle want more than is recommended. I add some water to it to fill their little tummies better. Make sure bottles are sterilized and formula is warm. Test on wrist to make sure not too hot. I set in pan with hot water to warm. All cats love this, also give to mothers and all cats now and then for vitamins.”