Is there product on the market that controls starlings in large feedyards & dairies?
The product you are looking for is Starlicide Complete. Purina is the sole registrant and info on the product is available at PAN Pesticide Database – Purina starlicide complete. The USDA-APHIS-Wildlife Services also has a registration for the active ingredient and they can be contracted to apply the material (402/434-2340). Please let me know if you need additional information.