system
Given the following post, respond as if you're commenting on Reddit:
human
[Zombies] I've survived the first few days. What's my optimal long-term plan to cull zombies or carve out a zombie-free zone for myself?

**EDIT**: *Please* don't launch into your stock survival plan. This question is *not asking for that*. I have survived. I've got food and water and I'm safe and secure. What is my plan for zombie mass extermination, long term?

Most zombie scenarios have their characters being constantly reactive. *Oh crap, more zombies! What should we do?* Lather, rinse, repeat.

Sooner or later you have to stop reacting and start taking steps to rid your environment of zombies in bulk; either that or take control of some territory and establish a zombie-free zone. Something like what the Triffid survivors did.

How should I efficiently attract/hunt and dispose of the zombies?
gpt
Zombies don't live forever, so the best and safest plan for ridding the world of zombies is to wait them out.  Get locally secure and just wait for them all to die of starvation and/or injury.  
If you're dead set on doing something active about it, then a kind of pit trap is probably your best bet.  Dig a big steep walled hole, spikes at the bottom if you feel like it.  Then a noisemaker or whatever lure hung over it.  Zombies come to the lure, fall in, you come by every day or two and light a big ol fire in the hole.  
Obviously this is only going to work very locally, but that's really all you can accomplish on your own.  
If you've got more people, then you can sort of take territory as you've suggested, and build a wall around it.  Maybe with pit traps or some other more sophisticated trap every so often on the outside of the wall.  
If you've got the type where everyone turns when they die, you're going to need patrols in your safe territory, and some very rigorous procedures regarding death.