Casting Dirty Pole does not affect some of the mobs. Some gets afflicted when they are near, some don’t even when they are 1 pixel away from it.
Tested this with:
(1) Dirty Pole
(2) Magnetic Pole to pull right next to it
(3) Sometimes it adds a debuff, sometimes it doesn’t. It only affects 1-2 mobs only.
Pretty useless if this is RNG.