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This article is a strategy guide for Mature grotworm.
Information on mechanics, setups, and tactics is on this page.
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Mature grotworms are moderately large worm-like creatures. Utilising this guide is a helpful way to maximise profit. Mature grotworms are found in the cave between Port Sarim and Rimmington. After banking drops from the grotworms, it is advised to use the slide shortcut, found south after entering the cave. This shortcut requires 50 Agility and brings the player straight to the grotworms.

Melee is the most common way to kill grotworms, as they have a very low crush and low stab defence and mediocre slash defence. However, grotworms will immediately launch a magic attack at anyone charging them, making magic protection prayers an option to consider when not at close range. Nevertheless, they are fairly easy to kill using melee and good stats. Considering their damage output they are one of the less difficult enemies in their level grouping. Using soul split, one could heal and stay as long as prayer potion supply allows. Using Guthan's is also a very good way to heal for longer trips, using little or no food. 95+ combat level is recommended. A Guthan's set, Saradomin godsword or an Enhanced excalibur could be a useful healing option.

Recommended levels

Recommended equipment

Recommended equipment for Melee
Slot Item (most effective → least effective)
Head slot Torva full helm Torva full helm / Corrupted slayer helmet Corrupted slayer helmet Bandos helmet Bandos helmet Torag's helm Torag's helm Dragon full helm Dragon full helm Rock-shell helm Rock-shell helm
Neck slot Brawler's blood necklace Brawler's blood necklace Saradomin's whisper Saradomin's whisper Blood amulet of fury Blood amulet of fury Amulet of fury (t) Amulet of fury (t) Amulet of fury Amulet of fury
Back slot Completionist cape Completionist cape Max cape Max cape TokHaar-Kal-Ket TokHaar-Kal-Ket Fire cape Fire cape Strength cape Strength cape
Torso slot Torva platebody Torva platebody Bandos chestplate Bandos chestplate Torag's platebody Torag's platebody Dragon platebody Dragon platebody Rock-shell plate Rock-shell plate
Legs slot Torva platelegs Torva platelegs Bandos tassets Bandos tassets Torag's platelegs Torag's platelegs Dragon platelegs Dragon platelegs Rock-shell legs Rock-shell legs
Main hand slot Chaotic rapier Chaotic rapier Abyssal vine whip Abyssal vine whip Abyssal whip Abyssal whip Toktz-xil-ak Toktz-xil-ak Dragon scimitar Dragon scimitar
2h slot Chaotic maul Chaotic maul Saradomin godsword Saradomin godsword Torag's hammer Torag's hammer Dragon 2h sword Dragon 2h sword Gravite 2h sword Gravite 2h sword
Off-hand weapon slot Off-hand chaotic rapier Off-hand chaotic rapier Korasi's sword Korasi's sword Superior off-hand dragon scimitar Superior off-hand dragon scimitar Enhanced Excalibur Enhanced Excalibur N/A
Off-hand slot Chaotic kiteshield Chaotic kiteshield Bandos warshield Bandos warshield Blessed spirit shield Blessed spirit shield Crystal shield Crystal shield Toktz-ket-xil Toktz-ket-xil
Gloves slot Pneumatic gloves Pneumatic gloves Goliath gloves (black) Goliath gloves (black) Bandos gloves Bandos gloves Superior Dragon Rider gloves Superior Dragon Rider gloves Rock-shell gloves Rock-shell gloves
Feet slot Torva boots Torva boots Steadfast boots Steadfast boots Bandos boots Bandos boots Dragon boots Dragon boots Rock-shell boots Rock-shell boots
Ring slot Leviathan ring Superior Leviathan ring Asylum surgeon's ring Asylum surgeon's ring Onyx ring (i) Onyx ring (i) Sixth-Age circuit Sixth-Age circuit Berserker ring (i) Berserker ring (i)
Aura slot Vampyrism aura Vampyrism aura Penance aura Penance aura Brawler aura Brawler aura Invigorate aura Invigorate aura Inspiration aura Inspiration aura
Pocket slot Superior scrimshaw of vampyrism Superior scrimshaw of vampyrism/Scrimshaw of vampyrism Scrimshaw of vampyrism Illuminated Book of Chaos Illuminated god book Sign of death Sign of death Sign of life Sign of life Holy wrench Holy wrench

Recommended Inventory

Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
SharkSharkSharkShark
SharkSharkSharkShark
Prayer renewal (4)Prayer renewal (4)50Nature rune250Fire rune
Spirit terrorbird pouchBonecrusher1Teleport to house

Ranged is a safe way to deal with these grotworms. Their magic attack has a short attack range, similar to Waterfiends, allowing players to use safespots in their lair, as long as the grotworms cannot move around obstructions. Few safespots exist, however, and even with good magic defence, they can still hit hard, so this is only recommended for those with high ranged levels, or those who do not mind using Prayer potions for Protect from Magic. At 70 Ranged, most shots will hit, and the grotworms' drops make training Ranged profitable, even after buying ammo and Prayer potions. For those without much money or chaotic equipment, a crystal bow is probably the best choice for multiple reasons: its damage allows quick kills (3 hits or less with 80+ ranged), its accuracy almost guarantees a hit every time, and arrows don't have to be picked up. Despite not being the specific weakness of grotworms, it far outperforms rune crossbows as the bow does with waterfiends. The only problems with the Crystal bow are the quest requirement and the fact it may be more expensive per shot than broad-tipped bolts. An ideal set-up for someone without expensive gear would be a crystal bow, royal dragonhide body, royal dragonhide chaps, blessed dragonhide coif (Full slayer helmet if on a task), spined boots , Barrows gloves or spiky royal dragonhide vambraces , an amulet of ranging, and a ring of wealth .

Recommended Levels

  • 70+ Ranged/Magic
  • 60+ Defence
  • 43+ Prayer for Protect Prayers
  • 50+ Prayer (95 for optimum kills per hour) for curses

Recommended Gear

Ranged

Recommended equipment for Ranged
Slot Item (most effective → least effective)
Head slot Pernix cowl Pernix cowl / Corrupted slayer helmet Corrupted slayer helmet Armadyl helmet Armadyl helmet Karil's coif Karil's coif Royal dragonhide coif Royal dragonhide coif Spined helm Spined helm
Neck slot Blood amulet of fury Blood amulet of fury Desert amulet 4 Desert amulet 4 / Dragon Rider amulet Dragon Rider amulet Farsight blood necklace Farsight blood necklace Farsight sniper necklace Farsight sniper necklace Saradomin's murmur Saradomin's murmur
Back slot Max cape Max cape Defence cape Cape of Accomplishment Dragon Rider cape Dragon Rider cape / TokHaar-Kal-Xil TokHaar-Kal-Xil Ava's alerter Ava's alerter / Ardougne cloak 4 Ardougne cloak 4 N/A
Torso slot Pernix body Pernix body Armadyl chestplate Armadyl chestplate Karil's top Karil's top Royal dragonhide body Royal dragonhide body Spined body Spined body
Legs slot Pernix chaps Pernix chaps Armadyl chainskirt Armadyl chainskirt Karil's skirt Karil's skirt Royal dragonhide chaps Royal dragonhide chaps Spined chaps Spined chaps
Main hand slot Chaotic crossbow Chaotic crossbow Armadyl crossbow Armadyl crossbow Karil's pistol crossbow Karil's pistol crossbow Dragon crossbow Dragon crossbow Demon slayer crossbow Demon slayer crossbow
2h slot Zaryte bow Zaryte bow Royal crossbow Royal crossbow Karil's crossbow Karil's crossbow Hand cannon Hand cannon Crystal bow Crystal bow
Off-hand weapon slot Off-hand chaotic crossbow Off-hand chaotic crossbow Off-hand Armadyl crossbow Off-hand Armadyl crossbow Karil's off-hand pistol crossbow Karil's off-hand pistol crossbow Off-hand dragon crossbow Off-hand dragon crossbow Off-hand demon slayer crossbow Off-hand demon slayer crossbow
Off-hand slot Eagle-eye kiteshield Eagle-eye kiteshield / Attuned crystal deflector Attuned crystal deflector Armadyl buckler Armadyl buckler Corrupted defender Corrupted defender Dragonfire deflector Dragonfire deflector Dragon defender Dragon defender / Black dragonhide shield Black dragonhide shield
Ammo slot Onyx bolts (e) 5 Onyx bolts (e) Diamond bolts (e) 5 Diamond bolts (e) / Royal bolts 5 Royal bolts Bolt rack 5 Bolt rack Broad-tipped bolts 5 Broad-tipped bolts / Hand cannon shot Hand cannon shot Adamant bolts 5 Adamant bolts
Gloves slot Pernix gloves Pernix gloves Armadyl gloves Armadyl gloves Demon slayer gloves Demon slayer gloves / Mercenary's gloves Mercenary's gloves Royal spiky vambraces Royal spiky vambraces Spined gloves Spined gloves
Feet slot Pernix boots Pernix boots Armadyl boots Armadyl boots Demon slayer boots Demon slayer boots Royal dragonhide boots Royal dragonhide boots Spined boots Spined boots
Ring slot Asylum surgeon's ring Asylum surgeon's ring / Sixth-Age circuit Sixth-Age circuit Luck of the dwarves Luck of the dwarves Superior leviathan ring Superior leviathan ring / Leviathan ring Leviathan ring Ring of fortune Ring of fortune Archers' ring Archers' ring
Aura slot Vampyrism aura Vampyrism aura Penance aura Penance aura Brawler aura Brawler aura Invigorate aura Invigorate aura Inspiration aura Inspiration aura
Pocket slot Superior scrimshaw of vampyrism Superior scrimshaw of vampyrism/Scrimshaw of vampyrism Scrimshaw of vampyrism Illuminated Book of Chaos Illuminated god book Sign of death Sign of death Sign of life Sign of life Holy wrench Holy wrench

Recommended Inventory

Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
SharkSharkSharkShark
SharkSharkSharkShark
Prayer renewal (4)Prayer renewal (4)50Nature rune250Fire rune
Spirit terrorbird pouchBonecrusher1Teleport to house

Magic is a safe way to deal with these grotworms. Their magic attack has a short attack range, similar to Waterfiends, allowing players to use safespots in their lair, as long as the grotworms cannot move around obstructions. Few safespots exist, however, and even with good magic defence, they can still hit hard, so this is only recommended for those with high ranged levels, or those who do not mind using Prayer potions for Protect from Magic.

Recommended Levels

  • 70+ Magic
  • 60+ Defence
  • 43+ Prayer for Protect Prayers
  • 50+ Prayer (95 for optimum kills per hour) for curses
Recommended equipment for Magic
Slot Item (most effective → least effective)
Head slot Virtus mask Virtus mask / Corrupted slayer helmet Corrupted slayer helmet Ganodermic visor Ganodermic visor Hood of subjugation Hood of subjugation Ahrim's hood Ahrim's hood Grifolic visor Grifolic visor
Neck slot Dragon Rider amulet Dragon Rider amulet / Desert amulet 4 Desert amulet 4 Arcane stream necklace Arcane stream necklace Saradomin's hiss Saradomin's hiss Amulet of fury (t) Amulet of fury (t) Amulet of glory Amulet of glory
Back slot Max cape Max cape Reefwalker's cape Superior reefwalker's cape Guthix cape God cape Defence cape Cape of Accomplishment Ardougne cloak 4 Ardougne cloak 4
Torso slot Virtus robe top Virtus robe top Ganodermic poncho Ganodermic poncho Garb of subjugation Garb of subjugation Ahrim's robe top Ahrim's robe top Grifolic poncho Grifolic poncho
Legs slot Virtus robe legs Virtus robe legs Ganodermic leggings Ganodermic leggings Gown of subjugation Gown of subjugation / Ahrim's robe skirt Ahrim's robe skirt Ahrim's robe skirt Ahrim's robe skirt Grifolic leggings Grifolic leggings
Main hand slot Virtus wand Virtus wand / Attuned crystal wand Attuned crystal wand Abyssal wand Abyssal wand Wand of treachery Wand of treachery / Ahrim's wand Ahrim's wand / Crystal wand Crystal wand Ahrim's wand Ahrim's wand Grifolic wand Grifolic wand
2h slot Staff of darkness Staff of darkness Chaotic staff Chaotic staff / Attuned crystal staff Attuned crystal staff > Armadyl battlestaff Armadyl battlestaff Polypore staff Polypore staff / Greater runic staff Greater runic staff / Staff of light Staff of light / Enhanced ancient staff Enhanced ancient staff Augmented Sunspear (magic) Augmented Sunspear (magic) / Ahrim's staff Ahrim's staff / Crystal staff Crystal staff} N/A
Off-hand weapon slot Virtus book Virtus book / Attuned crystal orb Attuned crystal orb Abyssal orb Abyssal orb Ahrim's book of magic Ahrim's book of magic / Crystal orb Crystal orb N/A N/A
Off-hand slot Farseer kiteshield Farseer kiteshield Arcane spirit shield Arcane spirit shield Spectral spirit shield Spectral spirit shield Ward of subjugation Ward of subjugation Dragonfire ward Dragonfire ward
Gloves slot Virtus gloves Virtus gloves Static gloves Static gloves Gloves of subjugation Gloves of subjugation Spellcaster gloves Spellcaster gloves N/A
Feet slot Virtus boots Virtus boots Ragefire boots Ragefire boots Ganodermic boots Ganodermic boots Glaiven boots Glaiven boots Steadfast boots Steadfast boots
Ring slot Superior leviathan ring Superior leviathan ring Onyx ring (i) Onyx ring (i) Sixth-Age circuit Sixth-Age circuit Seers' ring (i) Seers' ring (i) Berserker ring (i) Berserker ring (i)
Aura slot Vampyrism aura Vampyrism aura Penance aura Penance aura Supreme runic accuracy aura Supreme runic accuracy aura Invigorate aura Invigorate aura Inspiration aura Inspiration aura
Pocket slot Superior scrimshaw of the elements Superior scrimshaw of the elements Sign of life Sign of life / Sign of death Sign of death Scrimshaw of magic Scrimshaw of magic Sign of item protection Sign of item protection N/A

Recommended Inventory

Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
Prayer potion (4)Prayer potion (4)Prayer potion (4)Prayer potion (4)
SharkSharkSharkShark
SharkSharkSharkShark
Prayer renewal (4)Prayer renewal (4)50Nature rune250Fire rune
Spirit terrorbird pouchBonecrusher1Teleport to house

The regular prayer book is most commonly used by low-level players for the protection prayers. For low level players without 50 Agility for the shortcut and a shield for Rejuvenate is recommended, given the rest of your inventory is filled with the highest life point healing food at your level - this will lessen the need to bank as frequently. If curses are used in conjunction with soulsplit , turmoil , anguish or torment then the use of food will be negated and also kills will only last for 2-3 hits.

Recommended equipment for Prayer
Slot Item (most effective → least effective)
Head slot Corrupted slayer helmet Corrupted slayer helmet Proselyte sallet Proselyte sallet Helm of neitiznot Helm of Neitiznot Initiate sallet Initiate sallet White full helm White full helm
Neck slot Demon horn necklace Demon horn necklace Split dragontooth necklace Split dragontooth necklace Amulet of fury (t) Amulet of fury (t) Dragon Rider amulet Dragon Rider amulet/Desert amulet 4 Desert amulet 4 N/A
Back slot Completionist cape Completionist cape Red cape Soul Wars cape Max cape Max cape TokHaar-Kal-Ket TokHaar-Kal Fire cape Fire cape
Torso slot Proselyte hauberk Proselyte hauberk Initiate hauberk Initiate hauberk White platebody White platebody Monk's robe (top) Monk's robe (top) (Any melee body of choice)
Legs slot Proselyte cuisse Proselyte cuisse/Proselyte tasset Proselyte tasset Initiate cuisse Initiate cuisse/Initiate tasset Initiate tasset White platelegs White platelegs/White plateskirt White plateskirt Monk's robe (bottom) Monk's robe (bottom) (Any melee legs of choice)
Main hand slot Chaotic longsword Chaotic longsword Chaotic rapier Chaotic rapier Abyssal whip Abyssal whip Brackish blade Brackish blade Dragon scimitar Dragon scimitar
Off-hand slot Faithful shield Faithful shield Dragon defender Dragon defender Dragonfire shield Dragonfire shield N/A N/A
Gloves slot Goliath gloves (black) Goliath gloves Culinaromancer's gloves 10 Culinaromancer's gloves 10 N/A N/A N/A
Feet slot Steadfast boots Steadfast boots Dragon boots Dragon boots Bandos boots Bandos boots White boots White boots N/A
Ring slot Onyx ring (i) Onyx ring (i) Berserker ring (i) Berserker ring (i) Dragonstone ring (i) Dragonstone ring (i) Berserker ring Berserker ring TokKul-Zo TokKul-Zo
Aura slot Supreme reverence aura Supreme reverence aura Master reverence aura Master reverence aura Greater reverence aura Greater reverence aura Reverence aura Reverence aura N/A
Pocket slot Ancient Book God Book N/A N/A N/A N/A

Recommended Inventory

SharkSharkSharkShark
SharkSharkSharkShark
50Nature rune250Fire rune
Spirit terrorbird pouchBonecrusher1Teleport to house

A third possibility is a bit more flexible, and is an extremely effective method when off-task. Using the Elite Void Knight equipment increases the kill rate significantly, allows for near the same tanking ability as fights in black dragonhide armour, while sustaining a significant prayer bonus for Piety/Turmoil. The set required for this setup can be further optimised by either using Dragon defender with Void gloves to increase attack or using Void deflector with Culinaromancer's Gloves/Goliath Gloves to increase strength bonus.