My vet had me change their dry food to Hill's science 11+. Said it would be better for them. Two of my cats are fine with eating it. The other 2 have had diarrhea now for a week. I have medicine for them from the vets but they are wanting to do a poop test to make sure it isn't something else then the food. They are indoor only cats and I have paid for that test in the past just to be told all is good. I just want to put them back on the dry store-bought food like they were eating. Anyone else have a problem with Hill's Science dry food and is it really better then store bought? I just don't have money to throw away anymore. Between the vet/hospital bills and their medicine and the Hill's dry food is so expensive.