If they do respawn, I believe they do so at least once... on very rare occasions, twice. xP
that's like ten every two hours? confused
I better do the layer jumping.
On top of layer jumping, don't forget to server hop. ^^;; I would usually switch servers once I finished off the first patrol on one, then switch back to wait for the second patrol after I killed the first patrol on both servers. xP It can get kinda complicated with all of the layer jumping and server hopping, but it does get those badges done faster. X: