Canned food stays for 4 days at my house then iit’s tossed,try freezing portions of it
3 days is best. put plastic wrap over the food and it’s best to take the food out of the can helps keep it fresher. I use a ziploc sandwich baggy to store it in.
Just give him his meal. Toss whatever is left in his BOWL. Buy a can cover at your pet store, and only store what is in the CAN. Good luck!!!
-MDL☺