Feral ghouls in (location) is a paper note in Fallout 4. When picked up, it adds an objective that requires the Sole Survivor to remove feral ghouls from a random location.
Location[]
Posters can be found in the Diamond City security office and the Dugout Inn.
Transcript[]
Open notice to anyone with a gun and some ambition.
Feral Ghoul activity is on the rise near <Alias=Dungeon>. They may not have much in the way of supplies, but they congregate near areas with good salvage. Plus, ridding the world of these monsters will bring a smile to your face.
Keep what you kill. No other reward given.