DeCoriolis says the report’s findings are particularly disturbing given Costco’s control over its supply chain and the power it has to change things for the better. “Costco has 100% control. They get to decide how the birds are raised. They get to decide what genetics are used. They get to decide how the birds are killed. They get to decide 100% of what goes on in those operations. And right now they’re choosing the worst option.”