Around 100,000 pounds of raw ground chicken patty products, mostly sold at Trader Joe’s, are being recalled.

The ground chicken might be “contaminated with extraneous materials, specifically pieces of bone,” according to the U.S. Department of Ag’s Food Safety and Inspection Service.

The Trader Joe’s items affected are two frozen chicken products: Chile Lime Chicken Burgers and Spinach Feta Chicken Sliders.

The problem was discovered after customer complaints reporting findings of bone in the chicken burger product. Consumers should check the packages to see if they are included in the recall.

The Chile Lime Chicken Burgers involved have the lot codes 2281, 2291, 2311, 2351, 2361, 2371, 2441, 2511, 2521, 2531, 2561, 2591, 2601, 2671 and 2721.

The Spinach Feta Chicken Sliders involved are 9-pound bulk packs containing 72 pieces, with lot codes 2361 and 2631.

Both products were sold nationwide and produced between Aug. 16 and Sep. 29.

Customers are encouraged to throw away the recalled products or return them at the store.