
In the world of Monster Hunter Wilds, acquiring Inferno Sacs is essential for crafting formidable gear, particularly the Kut-Ku or Guardian Rathalos armor sets, as well as potent weapons. These monster organs contain an explosive powder that is key to various equipment enhancements.
Fortunately, since Inferno Sacs are utilized for several gear pieces, they drop from a variety of monsters. This means you will likely accumulate a substantial number during your hunts. Below, we discuss the best strategies for locating these valuable items in the game.
Locating Inferno Sacs in Monster Hunter Wilds
Inferno Sacs can be obtained from several High Rank Large Monsters. The monsters that can yield this item, along with their habitats, are as follows:
- High Rank Rathian – Found in Windward Plains, Scarlet Forest, and Oilwell Basin
- High Rank Kut-Ku – Located in Windward Plains, Oilwell Basin, Iceshard Cliffs, and Ruins of Wyveria
- High Rank Gravios – Resides in Oilwell Basin and Ruins of Wyveria
- High Rank Guardian Rathalos – Exclusive to Ruins of Wyveria
- High Rank Rathalos – Spotted in Scarlet Forest, Oilwell Basin, and Ruins of Wyveria
Keep in mind that Inferno Sacs are not guaranteed drops from these creatures, so you might need to engage multiple times to secure enough of them for your crafting needs.
To optimize your search, start your expeditions in Oilwell Basin or Ruins of Wyveria. These locations host several of the key monsters that drop Inferno Sacs, providing you with ample opportunities to engage them and collect the necessary items.

To check which Large Monsters are currently roaming in these biomes, access your World Map and navigate to the chosen area. The Environment Overview section on the right side of your screen will display all present Large Monsters along with their strength levels, helping you prepare for your hunt.
Once you select a specific monster on your map, you can set a Waypoint to its location or initiate a Field Survey/Investigation. This feature allows your Seikret to guide you to the monster, facilitating a swift start to your hunt.
After exhausting one biome, feel free to venture into another to continue your search for Inferno Sacs. Repeat this process until you have accumulated your desired quantity of resources.

If you find yourself short on available Large Monsters, you can utilize a nearby Pop-Up Camp to pass the time or try summoning more monsters using Guild Points. Just make sure to select a monster of High Rank difficulty before heading into battle!
To further enhance your experience in Monster Hunter Wilds, explore guides on weapon upgrades, finding a Sandstar, or catching a Whopper.
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