Instruct: Classify Amazon reviews into positive or negative sentiment
Query: They changed the ingredients

I stopped feeding Natural Balance to my dog because they changed the ingredients. I emailed Natural Balance about the changes to their product and they never responded. The "meat" rolls now have less meat and more grain and filler, in addition to sugar.Here are the differences between the old formula and the new formula:First seven ingredients of old formula- Lamb, Lamb Hearts, Lamb Kidneys, Lamb Lungs, Whole Wheat Flour, Rice Flour, Calcium CarbonateFirst seven ingredients of new formula - Lamb Lungs, Wheat Flour, Sugar, Lamb, Wheat Bran, Lamb Hearts, SaltKeep in mind that the ingredients are listed in descending order of predominance. This means that the first ingredient is the most prevalent in the product.