Molli poops 4 times a day at least, is this usually only caused from the type of food that is fed? I know foods with lots of fillers cause frequent pooping. I feed her Nutro Ultra, is there a different food for around the same price I should be feeding her? ( I pay 35 dollars for 15 pounds) I was under the impression that this is a decent brand. I am a college student and don't have much money to buy the more expensive brands, otherwise I definitely would!

Sam eats Science Diet because it was prescribed by the vet for his chronic colitis, which I thought was not as good quality, but he only poops twice a day.