All Fleas Checklist for Hollow Knight: Silksong

Track and find all 30 Fleas in Hollow Knight: Silksong to complete your collection and earn a Pale Oil.

Fleas do not count towards 100 % completion, but the Pale Oil is necessary for 100 % completion.

Use this checklist to track your progress finding all the Lost Fleas scattered throughout Pharloom.

All Fleas Checklist for Hollow Knight: Silksong

After getting Wish: Ecstasy of the End, find the Fleas in Putrified Ducts and complete the Flea Festival mini-games in Fleatopia to get the Pale Oil from Mooshka.

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This checklist is relevant for these achievements:

Flea Finder Achievement

Flea Finder

Rescue half of Pharloom's lost fleas

Fleafriend Achievement

Fleafriend

Rescue all of Pharloom's lost fleas and receive their final gift

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0/30

Fleas

Flea Description
Flea 1 Location: The Marrow
Northern room in The Marrow
Flea 2 Location: Hunter's March
Parkour challenge at the start
Flea 3 Location: Deep Docks
Next to the Bellway
Flea 4 Location: Deep Docks
After getting Swift Step
Flea 5 Location: Deep Docks
Hidden past southeast Arena

Clawline required
Flea 6 Location: Far Fields
Trap room west of Pilgrim's Rest
Flea 7 Location: Far Fields
Pilgrim's Rest shortcut from Bellway
Flea 8 Location: Greymoor
Above Craw House
Kratt Location: Greymoor
Halfway Home northeast secret room
Flea 10 Location: Greymoor
Top of the west tower
Flea 11 Location: Sinner's Road
Eastern tall room above Styx

Cling Grip required
Flea 12 Location: Bellhart
Above entrance from Shellwoood

Cling Grip required
Flea 13 Location: Shellwood
Stuck in vines near flower enemies
Flea 14 Location: Wormways
Breakable wall in main tall room
Flea 15 Location: Blasted Steps
Path to Sands of Karak

Cling Grip required
Flea 16 Location: Sands of Karak
Jumping puzzle in south-central room
Flea 17 Location: Underworks
Next to Cauldron, on the left side
Flea 18 Location: Underworks
Path to Underworks from Wisp Thicket
Flea 19 Location: Choral Chambers
Parkour challenge north of Citadel Spa
Flea 20 Location: Choral Chambers
Activate the fan in secret shaft
Flea 21 Location: Whispering Vaults
Moving box puzzle

Clawline or Faydown Cloak required
Flea 22 Location: Whispering Vaults
Parkour challenge beside Songclave
Large Flea Location: Memorium
Defeat the flea in north Memorium
Flea 24 Location: The Slab
Above the bench

Faydown Cloak required
Flea 25 Location: The Slab
Near Slab shortcut

Keys of Apostate, Indolent required
Flea 26 Location: Mount Fay
Ice challenge west of Brightvein

Faydown Cloak required
Vog Location: Putrified Ducts
Secret path around the Bellway

Clawline required
Flea 28 Location: Bilewater
West from Exhaust Organ (north door)
Flea 29 Location: Bilewater
Towards Sinners's Road entrance
Flea 30 Location: Bilewater
Break wall near secret bench

Cling Grip required
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