Brine rats are Slayer monsters that can only be fought after the partial completion of Olaf's Quest. They are notable for being the only monsters to drop the Brine sabre. A Slayer level of 47 is required to fight a brine rat, and a spade is required to access the cave. The brine rats are relatively weak, but it is recommended to bring food if you have less than 70 Defence. Olaf has an infinite fire located beside him, and the unnoted raw swordfish drops can be collected and cooked on the fire, just outside the brine rat cave.
Rangers and mages may attack behind the skeletons and bones lying throughout the room to safespot the rats. The best location being behind the bones in the north west corner.
A Dwarf multicannon is usable in the Brine Rat Cavern.
Locations
- Brine Rat Cavern
- The cave that is accessed during Olaf's Quest via using a spade to dig in a spot south of the Windswept tree. It is near the entrance to the polar hunter area, north east of Rellekka. Use a spade to dig next to the tree up the hill to enter the cave. The fairy ring code DKS will take you close to where you dig.
Drops
100%
Item Quantity Rarity GE market price 
Bones 1 Always 89
Raw rat meat 1 Always 61
Food
raw lobsters 10 (noted)
Item Quantity Rarity GE market price
Raw rat meat 18 (noted) Common 1,098
Air rune 18 Common 90
Raw pike 18 (noted) Uncommon 1,818
Raw swordfish 9 Uncommon 3,150
Raw shark 3; 8 (noted) Uncommon 2,196–5,856
Raw shark 1 Rare 732
Runes
Item Quantity Rarity GE market price
Death rune 7 Common 1,421
Air rune 18 Uncommon 90
Earth rune 10; 18; 36 Uncommon 40–144
Water rune 10; 18 Uncommon 40–72
Blood rune 4 Rare 1,468
Other drops
Item Quantity Rarity GE market price
Coins 1; 2; 4; 29; 30 Common Not sold
Water talisman 1 Uncommon 171
Brine sabre 1 Rare (1/512) 148,137
