I think it is so you cant just place your cannon down, and have it be in the same spot literally all day long. Like I could put it in the prime location at a busy area just to troll people. If it didn't decay it could just be a permanent fixture of the runescape world lol.
Toastcrumbs
said
:
That makes sense too Micheal, just annoys me because I swear it happens every time I go to fill my cannon again, lmao.
the Zenshu is stronk in this one