Decay
From Muds and Dragons
Decay pertains to objects in the game and how long it takes for them to not exist anymore by natural means. All objects have a decay time, can be a few days for fresh fruit and meat, to centuries for well forged metal weapons and armor.
Decay is the status on all objects and creatures that progresses with time and eventually tells when an item is no longer usable or survivable unless means are made to keep it preserved.