Gleason's Gielinor Guide

AdultBaby
Rockslug

Released		26 January 2005 (Update)
Members		Yes
Combat level		29
Size		1x1
Examine		The slime of evil.
Combat info
XP bonus		+0%
Max hit		4
Aggressive		No
Poisonous		No
Attack style		Crush
Attack speed		4 ticks (2.4 seconds)
Respawn time		15 ticks (9 seconds)
Slayer info
Slayer level		20
Slayer XP		27 xp
Category		Rockslugs
Assigned by
Combat stats

27	22	27	27	1	1
Aggressive stats

+0	+0	+0	+0	+0	+0
Melee defence

+0		+0		+0
Magic defence

+0			25% weakness
Ranged defence

+0		+0		+0
Immunities
Poison		0% resistance
Venom		0% resistance
Cannons		Not immune
Thralls		Not immune
Open in DPS calculator
Advanced data
Monster ID		421,14423
Link		MOID

Rockslugs are Slayer monsters that require level 20 Slayer to kill. A bag of salt must be used on it when it has 4 or less Hitpoints to finish it off. If used on a rockslug with 5 or more Hitpoints, the bag will be consumed but have no effect. If a rockslug's health is reduced to 1 but a bag of salt is not used on it, the rockslug will stop retaliating and wander off.

Players can buy the "Slug salter" perk from a Slayer Master for 10 Slayer points, which will automatically salt the rockslug when it falls below 4 Hitpoints, provided that the player has a bag of salt in their inventory. Alternatively, a brine sabre can be used to kill them without the need for bags of salt.

They are rarely killed due to their mediocre drops, which consists of low level ores and seeds. They may rarely drop the mystic gloves (light).

Locations

Location	Levels	Spawns	Map
Dorgesh-Kaan South Dungeon (AJQ)	29	1	Show map
Fremennik Slayer Dungeon (AJR)	29	7	Show map
Lumbridge Swamp Caves	29	5	Show map
Tonali Cavern	29	6	Show map
Ynysdail Cavern	29	8	Show map

Drops

Drop rates are estimated based on 475,942 samples from the Drop Rate Project, unless otherwise cited.

The average Rockslug kill is worth 123.99.

Armour

	Item	Quantity	Rarity	Price	High Alch
	Mystic gloves (light)	1	1/512	5,436	6,000

Runes

Item	Quantity	Rarity	Price	High Alch
Earth rune	5	30/128	30	10
Earth rune	42	4/128	252	84
Chaos rune	2	4/128	210	108

Ores and bars

Item	Quantity	Rarity	Price	High Alch
Coal	1	13/128	140	27
Iron ore	1	22/128	73	10
Bronze bar	1	2/128	60	4
Iron bar	1	3/128	186	16
Copper ore	1	3/128	19	1
Tin ore	1	8/128	19	1
Mithril ore	1	1/128	155	97

Seeds

There is a 9/128 chance of rolling the general seed drop table.

Item	Quantity	Rarity	Price	High Alch
Potato seed	4	1/38	20	4
Onion seed	4	1/51	28	4
Cabbage seed	4	1/77	20	4
Tomato seed	3	1/155	15	6
Sweetcorn seed	3	1/311	15	12
Strawberry seed	2	1/623	10	20
Watermelon seed	2	1/1,303	180	66
Snape grass seed	2	1/1,792	23,340	112

Other

	Item	Quantity	Rarity	Price	High Alch
	Dwarven stout	1	13/128	140	1
	Hammer	1	10/128	120	0

Gem drop table

There is a 6/128 chance of rolling the gem drop table.

Item	Quantity	Rarity	Price	High Alch
Nothing	N/A	1/42.74; Never^{[d 1]}	N/A	N/A
Uncut sapphire	1	1/85.33; 1/43.33^{[d 2]}	205	15
Uncut emerald	1	1/170.67; 1/86.67^{[d 2]}	416	30
Uncut ruby	1	1/341.33; 1/173.33^{[d 2]}	1,016	60
Chaos talisman	1	1/910.22; 1/462.22^{[d 2]}^{[d 3]}	214	2
Nature talisman	1	1/910.22; 1/462.22^{[d 2]}^{[d 3]}	162	2
Uncut diamond	1	1/1,365.33; 1/693.33^{[d 2]}	2,438	120
Rune javelin	5	1/2,730.67; 1/1,386.67^{[d 2]}	635	1,200
Loop half of key	1	1/2,730.67; 1/1,386.67^{[d 2]}	9,573	60
Tooth half of key	1	1/2,730.67; 1/1,386.67^{[d 2]}	9,962	60
Rune spear	1	1/43,690.67; 1/2,600^{[d 2]}^{[d 4]}	11,754	12,480
Shield left half	1	1/87,381.33; 1/5,200^{[d 2]}^{[d 4]}	65,424	66,000
Dragon spear	1	1/116,508.44; 1/6,933.33^{[d 2]}^{[d 4]}	38,030	37,440

^ The "nothing" drop is removed while wearing a ring of wealth.
^ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 ^2.11 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
^ ^3.0 ^3.1 The talisman dropped depends on where the player is located (map); typically, a nature talisman will drop above ground level and a chaos talisman will drop underground.
^ ^4.0 ^4.1 ^4.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Collection log

Rockslugs have a single collection log item.

Item	Collections	Comp%
Mystic gloves (light)	Slayer	15.3%

Changes

Date	Changes
25 June 2025 (Update)	Rockslugs now have a 25% elemental weakness to earth spells.
27 August 2025 (Update)	The cost of Slug Salter was reduced from 80 to 10 points.
8 May 2024 (Update)	Vannaka and Chaeldar no longer assign players Rockslug tasks.

Trivia

According to the config name of the lighter green version, slayer_rockslug_baby, it is a baby rockslug.