Cave bugs are monsters that require level 7 Slayer to kill. They are found in the Lumbridge Swamp Caves, and stronger variants can be located in the Dorgesh-Kaan South Dungeon. They are a good source of low level herbs, which can aid beginning players in training Herblore.
Significantly more powerful Cave bugs, with a combat level of 96, can be found in the Dorgesh-Kaan South Dungeon, located south of the city of Dorgesh-Kaan, but can only be accessed to after the completion of the Death to the Dorgeshuun quest.
A light source is required for these dungeons, along with a rope to place down on the hole leading to the Lumbridge Swamp Caves, if it has not been done so previously.
Players should be on the lookout for Wall beasts within the Lumbridge Swamp Caves, which are monsters that will grab and attack you, if you are in their line of sight. To avoid being hit, either stand one square directly beside a hole in the wall and run across to the other side, or have a spiny helmet equipped.
Defeating a Cave bug in the Lumbridge Swamp Caves is a requirement for the easy Lumbridge & Draynor Diary tasks.
Locations
Drops
Weapons
Item Quantity Rarity GE market price 
Water battlestaff 1 Rare 8,972
Herbs
Item Quantity Rarity GE market price
Grimy guam leaf 1 Common 15
Grimy marrentill 1 Common 13
Grimy tarromin 1 Common 132
Grimy harralander 1 Uncommon 674
Grimy ranarr weed 1 Uncommon 7,640
Grimy irit leaf 1 Uncommon 775
Grimy avantoe 1 Uncommon 1,814
Grimy kwuarm 1 Uncommon 1,165
Grimy cadantine 1 Rare 1,312
Grimy lantadyme 1 Rare 1,391
Grimy dwarf weed 1 Rare 448
Runes
Item Quantity Rarity GE market price
Earth rune 6 Common 24
Water rune 8 Common 32
Nature rune 1–2 Uncommon 217–434
Other
Item Quantity Rarity GE market price
Coins 3–8 Common Not sold
Tinderbox 1 Common 62
Unicorn horn dust 1 Common 275
Swamp weed 1; 3 Common 177–531
Eye of newt 1 Common 4
Limpwurt root 1 Common 918
Snape grass 1 Common 271
Red spiders' eggs 1 Common 668 File:Candle lantern (empty).png Candle lantern 1 Rare Error
Candle 1 Uncommon 188
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