Sour, rancid, or ammonia-like smell
Gray, green, or brown discoloration throughout the meat
Slimy, sticky, or tacky texture
Mold growth
Packaging is swollen, leaking, or damaged
Meat feels unusually soft or mushy
Off or unpleasant odor after opening
Past the use-by or expiration date
Left unrefrigerated for more than 2 hours
Left unrefrigerated for more than 1 hour in hot temperatures
Excessive liquid pooling in the package
Color changes combined with odor or texture changes