pdq,
Malathion would be available at a regular farm supply place?
Is that a spray?

Clearing the yard would be great..but I'm gimpy and pretty limited on how much I can accomplish and don't know how to prioritize the task.
I do have a useful boychild who is planning to come do some work for me before long and if I knew which tasks to do first, I could put him to work on that.

I can cut little trees and viney crap (and he can drag it)
I can throw sticks and let him consolidate my small piles to a big one.
He can rake/clear an area around the foundation and he can broadcast (or spray) the poison.

Does that look like my sensible plan of attack?