Question: what ingredients are bad for dog food?
Answer: Corn and wheat gluten.
Meat and grain meals and by-products.
BHA (Butylated Hydroxyanisole)
BHT (Butylated Hydroxytoluene)
Ethoxyquin.
Food Dyes (Blue 2, Red 40, Yellow 5 and 6, 4-MIE)
PG (Propylene Glycol)
Rendered fat.