Costco is facing a proposed class action alleging its Nebraska poultry plant fails to meet USDA safety standards, leading to salmonella contamination in rotisserie chickens. The complaint cites testing showing 9.8% of whole chickens and 15.4% of parts positive for salmonella. The retailer sold more than 157m rotisserie chickens in 2025. The lawsuit seeks damages for shoppers since 2019, claiming consumer protection violations. Costco has not commented.