Lost Fleas of Pharloom: Silksong’s Cutest Nightmare for Completionists October 8, 2025

So, you’ve started your epic journey through Pharloom and stumbled upon Mooshka in The Marrow. He’ll ask you to rescue five of his lost performers to get the show on the road—literally. Once you rescue the first five, you get a pretty cool choice: join the Flea Caravan and unlock it as a fast-travel system, or go your own way.

But let’s be real, there are way more than five fleas scattered across this haunted kingdom. Here’s a rundown of where to look.

The Marrow

This is your starting point. You’ll find your first few fleas here, often trapped in glass jars just waiting for a hero like you. Listen for their tiny, squeaky cries! One is usually tucked away in a hidden alcove near where you first meet Mooshka, just to get you started.

The Deep Docks

As you descend into this dark and moody area, keep your eyes peeled. Fleas in the Deep Docks are often hidden behind breakable walls or require some clever platforming to reach. One particular flea is perched precariously above a pit of deadly spikes, so you’ll need to time your jumps just right.

The Far Fields

Don’t let the wide-open spaces of the Far Fields fool you; there are plenty of places for a tiny flea to hide. Check inside hollow logs and behind overgrown thickets. You’ll likely need to use Hornet’s acrobatic abilities to dash and climb your way to some of the trickier spots.

Greymoor and the Bellhart

These interconnected areas are crawling with secrets. Fleas here are often guarded by tougher enemies or hidden within intricate, bell-themed mechanisms. You might need to ring a few bells and solve a puzzle or two to reveal their hiding places. One sneaky flea is located at the very top of the Bellhart tower, a true test of your climbing skills.

Bilewater and the Choral Chambers

Things get a little gross in Bilewater, but don’t let the goo stop you. Some fleas have found themselves in some truly unfortunate situations here. You might need specific abilities, like the Clawline, to swing across acidic pools and rescue them. The Choral Chambers are just as tricky, with fleas hidden in spots that require precise aerial maneuvers.

The Sands of Karak and Mount Fay

The desert biome is vast and unforgiving. Fleas in the Sands of Karak are often buried under piles of sand that can only be cleared by defeating nearby enemies or using a specific tool. Meanwhile, on the snowy peaks of Mount Fay, you’ll need to battle the elements and slippery surfaces to find the fleas shivering in the cold. You’ll need the Cling Grip ability to navigate some of the icy vertical passages here.

Tips for a Successful Flea Hunt

• Listen Carefully: Just like the Grubs, Lost Fleas make a distinct whimpering sound when you’re near. Turn up your volume and let your ears guide you.
• Get Your Tools: You won’t be able to find all the fleas right away. Many are locked behind areas that require late-game Ancestral Arts like the Clawline or Cling Grip. Don’t stress if you can’t reach one; just make a note of it and come back later.
• Explore Everywhere: Seriously, leave no stone unturned. Hit every suspicious-looking wall, jump into every hole, and explore every corner of the map. That’s the Hollow Knight way, after all!

Finding all the Lost Fleas is a massive undertaking, but it’s one of the most rewarding quests in Hollow Knight: Silksong. So get out there, be the hero Mooshka needs, and save the circus!

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