The Culling Wiki

Silent But Deadly is a Stim that makes the user/consumer's movement and crafting sounds nearly silent for 2 minutes. It's active time can be increased to 2 minutes and 42 seconds with the perk Chemist.

Silent But Deadly can be found in customizable airdrops, the Tracker airdrop, lockers and medicine cabinets.

F.U.N.C Recycle Amount

Silent But Deadly can be recycled for 10 F.U.N.C..