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

Recommended Inventory

Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png
Prayer renewal (4).pngPrayer renewal (4).png50Nature rune.png250Fire rune.png
Spirit terrorbird pouch.pngBonecrusher.png1Teleport to house.png

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

Recommended Inventory

Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png
Prayer renewal (4).pngPrayer renewal (4).png50Nature rune.png250Fire rune.png
Spirit terrorbird pouch.pngBonecrusher.png1Teleport to house.png

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 Virtus mask.png Virtus mask / Corrupted slayer helmet.png Corrupted slayer helmet Ganodermic visor.png Ganodermic visor Hood of subjugation.png Hood of subjugation Ahrim's hood.png Ahrim's hood Grifolic visor.png Grifolic visor
Neck Dragon Rider amulet.png Dragon Rider amulet / Desert amulet 4.png Desert amulet 4 Arcane stream necklace.png Arcane stream necklace Saradomin's hiss.png Saradomin's hiss Amulet of fury (t).png Amulet of fury (t) Amulet of glory.png Amulet of glory
Back Max cape.png Max cape Reefwalker's cape.png Superior reefwalker's cape Guthix cape.png God cape Defence cape.png Cape of Accomplishment Ardougne cloak 4.png Ardougne cloak 4
Body Virtus robe top.png Virtus robe top Ganodermic poncho.png Ganodermic poncho Garb of subjugation.png Garb of subjugation Ahrim's robe top.png Ahrim's robe top Grifolic poncho.png Grifolic poncho
Legs Virtus robe legs.png Virtus robe legs Ganodermic leggings.png Ganodermic leggings Gown of subjugation.png Gown of subjugation / Ahrim's robe skirt.png Ahrim's robe skirt Ahrim's robe skirt.png Ahrim's robe skirt Grifolic leggings.png Grifolic leggings
Main hand Virtus wand.png Virtus wand / Attuned crystal wand.png Attuned crystal wand Abyssal wand.png Abyssal wand Wand of treachery.png Wand of treachery / Ahrim's wand.png Ahrim's wand / Crystal wand.png Crystal wand Ahrim's wand.png Ahrim's wand Grifolic wand.png Grifolic wand
Two-handed weapon Staff of darkness.png Staff of darkness Chaotic staff.png Chaotic staff / Attuned crystal staff.png Attuned crystal staff > Armadyl battlestaff.png Armadyl battlestaff Polypore staff.png Polypore staff / Greater runic staff.png Greater runic staff / Staff of light.png Staff of light / Enhanced ancient staff.png Enhanced ancient staff Augmented Sunspear (magic).png Augmented Sunspear (magic) / Ahrim's staff.png Ahrim's staff / Crystal staff.png Crystal staff} N/A
Off-hand weapon Virtus book.png Virtus book / Attuned crystal orb.png Attuned crystal orb Abyssal orb.png Abyssal orb Ahrim's book of magic.png Ahrim's book of magic / Crystal orb.png Crystal orb N/A N/A
Off-hand weapon Farseer kiteshield.png Farseer kiteshield Arcane spirit shield.png Arcane spirit shield Spectral spirit shield.png Spectral spirit shield Ward of subjugation.png Ward of subjugation Dragonfire ward.png Dragonfire ward
Gloves Virtus gloves.png Virtus gloves Static gloves.png Static gloves Gloves of subjugation.png Gloves of subjugation Spellcaster gloves.png Spellcaster gloves N/A
Feet Virtus boots.png Virtus boots Ragefire boots.png Ragefire boots Ganodermic boots.png Ganodermic boots Glaiven boots.png Glaiven boots Steadfast boots.png Steadfast boots
Ring Superior leviathan ring.png Superior leviathan ring Onyx ring (i).png Onyx ring (i) Sixth-Age circuit.png Sixth-Age circuit Seers' ring (i).png Seers' ring (i) Berserker ring (i).png Berserker ring (i)
Aura Vampyrism aura.png Vampyrism aura Penance aura.png Penance aura Supreme runic accuracy aura.png Supreme runic accuracy aura Invigorate aura.png Invigorate aura Inspiration aura.png Inspiration aura
Pocket Superior scrimshaw of the elements.png Superior scrimshaw of the elements Sign of life.png Sign of life / Sign of death.png Sign of death Scrimshaw of magic.png Scrimshaw of magic Sign of item protection.png Sign of item protection N/A

Recommended Inventory

Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Prayer potion (4).pngPrayer potion (4).pngPrayer potion (4).pngPrayer potion (4).png
Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png
Prayer renewal (4).pngPrayer renewal (4).png50Nature rune.png250Fire rune.png
Spirit terrorbird pouch.pngBonecrusher.png1Teleport to house.png

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

Recommended Inventory

Shark.pngShark.pngShark.pngShark.png
Shark.pngShark.pngShark.pngShark.png
50Nature rune.png250Fire rune.png
Spirit terrorbird pouch.pngBonecrusher.png1Teleport to house.png

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.

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