Sluiceworks

Poisonbite Ring

Feather Arrow 20 - Top floor of Gaping Dragon room in a chest

Channerler's Trident

Rotten Pine Resin - From the locked door at the top enter the sewers, on the right by the rats

Black Firebomb 3 - In the big rat room but can be acquired through the bars from the other side

Soul of a Weary Hunter - Just pas the fog wall

Poison Throwing Knife 5 - Just past the fog wall go left, past all of the rats behind a pillar

Scarlet Blossom - Past the fog wall in the tunnels, past the rats and sludge

Large Titanite Shard 2 - Just before the Worker's Key in the curse frog area

Worker's Key

Humanity - Above the Worker's Key, jump the gap in the tunnel

Domhnall- Weapon Smithbox 2000 souls

Partizan - Drop down from Butcher chute

Estoc - Giant Rat room

Confirmed Drops

Rats - Humanity

Frogs - Large Titanite Shard