My brother has a problem with hooking people with fishing rods instead of focusing on survival. I know about the
/clear command, but command blocks are only active when the chunk they're in is loaded, and I'm afraid that he'll go past that to get a fishing rod and start it up again. Since Minecraft is basically infinite, I can't keep placing command blocks whenever he moves away from one.
Is there a mod, command, etc. that can outright prohibit certain items from players' inventories no matter where they are in Minecraft?