Producers operating under the 1000 bird exemption must use a modified safe handling instructions label that denotes processed under Exempt P.L. 90-492. Waterproof, Permanent, Exceptionally Durable Custom Labels 3 1/2 Inch by 3 1/2 Inch Great for Small-Scale Poultry Processors For the best results: - dry all surfaces before applying our labels - use permanent marker (fine Sharpie works great)