Welcome to our big happy family..........
My cats are on Preformatrin Ultra Holistic......And they love it....And I have noticed since they have been on it that my DMH very rarely horks up a furball....
As for how much for the can,well mine get it 3 times a day.And they only get a teaspoon of it.They really are not big eaters.If at anytime they get hungry after that(usually after they do their zoomies chasing each all over the house..LOL),they nibble on their dry.....
I know with some of the cat commercials they show a huge heaping of it.That to me is wayyyyyy to much.