Grimy torstol

“It needs cleaning.”

MembersTradeable (not for Ironmen)High alch 15 gp

Sources from the OSRS Wiki's drop, shop and recipe data (CC BY-NC-SA 3.0), checked 2026-10-09; the verdict and ordering are ours, built from that data. Item sprite © Jagex.

Ironman verdict

Grimy torstol is a members item. Other players trade it, but an Ironman cannot use the Grand Exchange or trade, so you get your own. We list 9 monsters and 8 other sources for it.

The lowest-level monster that drops it is Grimy Lizard (level 50), at 1/682.67, about one in 683 kills. The best rate is from Skotizo (level 321): 7/100, 20 (noted) at a time. The 9 monsters we list with a combat level range from level 50 to 1,024. 6 monsters drop it already noted, including Skotizo and Phosani's Nightmare, which saves inventory space on a trip. It also comes from 8 other sources, such as Sinister chest and Extra supply crate.

Bosses we cover that drop it: Skotizo, Phosani's Nightmare, Scorpia and Kalphite Queen.

It is a material in 1 recipe: Torstol (75 Herblore). High Alchemy (55 Magic) turns one into 15 coins. Each cast uses a nature rune, 180 coins from a rune shop, and five fire runes that a fire staff replaces, so an alch loses about 165 coins; only alch it to clear space.

Where to get it, easiest first

1.KillGrimy Lizard · level 50, drops one at 1/682.67 (about one in 683 kills)
2.KillStingray · level 92, drops 1–2 at 1/533.3 (about one in 533 kills)
3.KillAncient Zygomite · level 109, drops one at 6/118 (about one in 20 kills)
4.Earn fromSinister chest · another source in the game
5.Earn fromExtra supply crate · another source in the game
6.Earn fromHerbiboar · another source in the game

Our order: buying first, then making it (lowest skill level first), then killing for it (lowest-level monster first), then other sources. Up to three of each; the full lists are below.

Monster drops

Dropped by	Level	Quantity	Rarity
Skotizo	321	20 (noted)	7/100
Phosani's Nightmare	1024	13–26 (noted)	4/100
Scorpia	225	10–15 (noted)	5/128
Kalphite Queen	333	25 (noted)	2/126
The Nightmare	814	1–16 (noted)	4/100
Alchemical Hydra	426	10–15 (noted)	1/107.7
Grimy LizardEasiest	50	1	1/682.67
Stingray	92	1–2	1/533.3
Ancient Zygomite	109	1	6/118