Rat bone

Rat bone is a members item. 2 monsters drop it, and the best one is also the easiest: Crypt rat (level 70), at 1/4 (about one every 4 kills).

MembersUntradeable

Updated 9 October 2026. Sources from the RuneScape Wiki's drop, shop and recipe data (CC BY-NC-SA 3.0), checked 2026-10-09. Item sprite © Jagex.

Ironman verdict

Other sources include Sewer rat. One recipe uses Rat bone: Bone in vinegar (Rat bone). Rat bone is members-only. It is untradeable, so every account, Ironman or not, gets it the same way.

At a glance

Members: Yes
Tradeable: No
Monster drops: 2
Shops: None
Recipes: None
Used in: 1 recipe

Monster drops

Dropped by	Level	Quantity	Rarity
Crypt ratEasiest	70	1	1/4
Rat	-	1	24/128

Best rates first, plus the lowest-level monsters that drop it. Every monster links to its full drop table in the bestiary.

Other sources

Sewer rat

Minigames, reward chests, clues, skilling and other non-combat sources.

What you make with Rat bone

Bone in vinegar (Rat bone)