Unopened canned cat food can last for years. Most are printed 2 years from date of manufacturing, but those are Best By dates and as long as they have been stored in a climate controlled area (like a home with AC) they can theoretically last much longer than the Best By dates.They like the mackarel and sardines I gave them. Nothing like Pepper who snubbed fish of all kinds But yes, it is a treat.
I have a question though. How long does unopened wet cat food last? I have a/c so it's not sitting outside in the heat and humidity? I ask because I have like a total of 30 cans of cat food fish and was thinking of feeding to them once a week. If it doesn't last long I can do 2 cans a week.
I always have at least 3 to 6 months worth of canned cat food on hand.