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This article is about the monster in the Lumbridge Swamp caves. For the monster in the Fremennik Slayer Dungeon, see Cave crawler.
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Cave bug icon

Cave bugs can be assigned as Slayer assignments, and require level 7 Slayer to kill. Bring food if you are below level 20, as they regenerate quickly.

Locations

Cave bugs

Cave bugs in the Chaos tunnels

Drops (level 8)

Main drop

Item Quantity Rarity GE price
Grimy guamGrimy guam1Common317
Grimy marrentillGrimy marrentill1Common969
Grimy tarrominGrimy tarromin1Common52
Grimy harralanderGrimy harralander1Common104
Grimy ranarrGrimy ranarr1Uncommon1,485
Grimy iritGrimy irit1Uncommon3,854
Grimy avantoeGrimy avantoe1Uncommon748
Grimy kwuarmGrimy kwuarm1Uncommon5,934
Grimy cadantineGrimy cadantine1Rare2,262
Grimy lantadymeGrimy lantadyme1Rare4,551
Grimy dwarf weedGrimy dwarf weed1Rare3,560
Eye of newtEye of newt1Common7
Limpwurt rootLimpwurt root1Common1,312
Snape grassSnape grass1Common78
Red spiders' eggsRed spiders' eggs1Common1,671
Unicorn horn dustUnicorn horn dust1Common890
Coins 5Coins3–8Common3–8
TinderboxTinderbox1Common244
Swamp weedSwamp weed1–8Common547–4,376
Candle lantern (empty)Candle lantern (empty)1Uncommon156
CandleCandle1Rare438
Bronze gauntletsBronze gauntlets1Rare650
Rare drop tableRare drop table1RareNot sold

Drops (level 12)

Charms

No charmGold charmGreen charmCrimson charmBlue charm
51–55%6–7%35–38%3–4%0.6–1.2%
Represents a 90% confidence range based on a sample of 2,178 kills.
1 charm is dropped at a time.
Add data to the log (requires JavaScript).

Only the level 12 Cave Bugs drop charms

Main drop

Item Quantity Rarity GE price
Grimy guamGrimy guam1Common317
Grimy marrentillGrimy marrentill1Common969
Grimy tarrominGrimy tarromin1Common52
Grimy harralanderGrimy harralander1Common104
Grimy ranarrGrimy ranarr1Uncommon1,485
Grimy iritGrimy irit1Uncommon3,854
Grimy avantoeGrimy avantoe1Uncommon748
Grimy kwuarmGrimy kwuarm1Uncommon5,934
Grimy cadantineGrimy cadantine1Uncommon2,262
Grimy lantadymeGrimy lantadyme1Rare4,551
Grimy dwarf weedGrimy dwarf weed1Rare3,560
Water runeWater rune1–167Common26–4,342
Earth runeEarth rune1–147Common22–3,234
Fire runeFire rune1–148Uncommon102–15,096
Nature runeNature rune1–8Uncommon427–3,416
Coins 25Coins1–38Common1–38
Swamp weedSwamp weed1–8Common547–4,376
Water battlestaffWater battlestaff1Rare8,435
Rare drop tableRare drop table1RareNot sold

Tertiary drops

Item Quantity Rarity GE price
Sealed clue scroll (easy)Sealed clue scroll (easy)1RareNot sold
Bronze gauntletsBronze gauntlets1Rare[1]650
Spirit sapphireSpirit sapphire1RareNot sold
Spirit emeraldSpirit emerald1RareNot sold
Spirit rubySpirit ruby1RareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold
  1. ^ Drops along with the Water battlestaff drop.

Rare drop table

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 250Coins250–500Common250–500
Uncut sapphireUncut sapphire1Common330
Uncut emeraldUncut emerald1Common743
Uncut rubyUncut ruby1Common1,009
Uncut diamondUncut diamond1Common2,329
Uncut diamondUncut diamond45–55 (noted)Rare104,805–128,095
Loop half of a keyLoop half of a key1Common12,328
Tooth half of a keyTooth half of a key1Common13,795
Uncut dragonstoneUncut dragonstone1Uncommon11,443
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare514,935–629,365
Dragon longswordDragon longsword1Common58,353
Dragon spearDragon spear1Rare36,901
BattlestaffBattlestaff180–220 (noted)Rare880,200–1,075,800
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,480
Rune platebodyRune platebody15–25 (noted)Rare562,200–937,000
Shield left halfShield left half1Rare65,056
Dragon helmDragon helm1Uncommon59,070
Rune arrowheads 5Rune arrowheads113–137Common15,594–18,906
Onyx bolts 5Onyx bolts135–165Very rare1,087,290–1,328,910
Chaos talismanChaos talisman1Rare1,013
Nature talismanNature talisman1Rare843
Water talismanWater talisman65–82 (noted)Rare344,760–434,928
Earth talismanEarth talisman65–82 (noted)Rare40,820–51,496
Fire talismanFire talisman25–35 (noted)Rare17,175–24,045
Raw lobsterRaw lobster135–165 (noted)Common26,595–32,505
Raw sharkRaw shark225–275 (noted)Uncommon184,950–226,050
Big bonesBig bones68–82 (noted)Uncommon11,492–13,858
Dragon bonesDragon bones180–220 (noted)Rare350,280–428,120
CoalCoal200–1,100 (noted)Uncommon24,200–133,100
Gold oreGold ore90–110 (noted)Common23,220–28,380
Adamantite oreAdamantite ore180–220 (noted)Uncommon52,200–63,800
Adamant barAdamant bar14–16 (noted)Common23,310–26,640
Adamant barAdamant bar135–165 (noted)Rare224,775–274,725
Runite oreRunite ore90–110 (noted)Rare105,570–129,030
Rune barRune bar(noted)Common7,716
Rune barRune bar45–55 (noted)Rare115,740–141,460
Grimy torstolGrimy torstol90–110 (noted)Uncommon356,130–435,270
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon132,480–161,920
Super restore (4)Super restore (4)45–55 (noted)Uncommon157,005–191,895
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon111,510–136,290
Lantadyme seed 5Lantadyme seed14–16Uncommon4,438–5,072
Dwarf weed seed 5Dwarf weed seed14–16Uncommon4,830–5,520
Magic seed 5Magic seed4Uncommon79,916
Palm tree seed 5Palm tree seed10Rare296,170
FlaxFlax450–550 (noted)Common29,700–36,300
Molten glassMolten glass45–55 (noted)Common10,260–12,540
Soft claySoft clay450–550 (noted)Uncommon298,800–365,200
Yew logsYew logs68–82 (noted)Uncommon12,648–15,252
Yew logsYew logs675–825 (noted)Rare125,550–153,450
Teak plankTeak plank45–55 (noted)Uncommon17,730–21,670
Mahogany plankMahogany plank270–330 (noted)Rare225,990–276,210
Blurberry SpecialBlurberry Special1Uncommon8,185
Vecna skullVecna skull1Very rare*208,534
Hazelmere's signet ringHazelmere's signet ring1Very rare*1,848,679,360
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal drops

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold
Mimic kill tokenMimic kill token1Very rare9,059

Trivia

  • Although this monster appears on Free-to-play worlds in the Taverley Slayer Dungeon, it cannot be killed because it requires a Slayer level of 7, while free players can only reach level 5.
  • The large level 18 cave bugs were level 96 before the Evolution of Combat.
  • When a level 18 cave bug is killed, it appears to fall apart and explode.
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