Sour, rotten, or ammonia-like smell
Slimy or sticky texture
Gray, green, or dull discoloration
Excessive liquid or unusual tackiness in the package
Packaging that is swollen, leaking, or damaged
Off taste after cooking
Mold or visible growth
Meat that feels unusually soft, mushy, or tacky
Chicken past its use-by or expiration date
Left out at room temperature for more than 2 hours
Left out at room temperature for more than 1 hour if above 90°F (32°C)