Cesar Select Dinners Review

According to the package you give 4 ''trays'' for every 10 lbs of your dogs weight. If my dogs weighs almost 90 lbs.. does that seriously mean 36 ''trays'' of this a day???? I saw a review on this very site where the person said their big dog ate 2 of the packages a day. I'm just wondering if Cesar is good for big dogs or if it fits in the ''Mighty Dog'' category where its specifically made for smaller dogs. My dog gobbled it down but then again my dog will gobble dwn almost anything.  ; )