DMZ Chemical Sourcing Guide

The Chemical Sourcing mission stands out as a challenging Tier 3 task for the Crown faction in Call of Duty: Warzone 2’s DMZ mode, introduced in Season 4. Players must locate three specific chemicals—Sulfuric Acid, Hydrogen Peroxide, and Radiation Blockers—and deliver them to dumpster dead drops across various maps. Success grants a Double Weapon XP Token and 10,000 XP, making it worthwhile for progression. This guide breaks down strategies, locations, and pro tips to streamline completion without unnecessary risks.

Understanding the Mission Basics

Chemical Sourcing requires dead dropping one bottle each of the three items at any available dumpster. These chemicals are mission items, allowing extraction and reuse across sessions if stored properly in your backpack or stash. The mission spans multiple maps like Al Mazrah, Ashika Island, Vondel, and the underground Koschei Complex, demanding adaptability to different environments and enemy threats.

Key rewards include accelerated weapon leveling via the Double XP token, ideal for grinding loadouts, alongside substantial faction reputation boosts from the XP haul. Prep by equipping radiation protection for Koschei runs and high-mobility loadouts for cache hunting.

Step-by-Step: Acquiring Sulfuric Acid

Sulfuric Acid is the first target, exclusively spawning in the Koschei Complex beneath Al Mazrah. Access via bunker entrances like the Oasis, but equip Radiation Blockers first to survive the toxic zones.

Inside, target green wooden storage boxes scattered throughout corridors and chambers, especially in the Defense Research Division sector. These caches randomly yield chemicals, so loot multiple—patience pays off as Sulfuric Acid appears frequently here. Jugs may sit in radiation chambers; scan shelves and corners.

• Entry Tips: Use Oasis or other Al Mazrah bunkers; avoid heavily contested ones.
• Search Priority: Green crates over standard loot; expect 5-10 per run.
• Extraction Option: Exfil with the item to save for later dead drops on safer maps.

Once secured, head to the nearest dead drop—Koschei has one near the shopkeeper, but it’s risky due to AI and players. Safer to exfil and drop on Al Mazrah dumpsters.

Step-by-Step: Hunting Hydrogen Peroxide

Hydrogen Peroxide poses the biggest challenge due to its rarity. Primary sources are hidden caches on Al Mazrah, Vondel, and Ashika Island—orange supply drops that blend into terrain.

Secondary spots include Al Mazrah hospitals and Koschei Complex, but drop rates are low. Focus on hidden caches: check walls, rocks, and buildings for interactable stashes. Vondel’s urban density aids quick searches, while Ashika’s islands hide them in caves.

Team up for efficiency; one loots while others cover. If no luck, rotate maps—RNG can frustrate solo players. Dead drop immediately upon finding to avoid loss.

Step-by-Step: Securing Radiation Blockers

The simplest objective: Radiation Blockers drop commonly from First Aid Kits map-wide. Open white medical boxes in buildings, vehicles, and buy stations—guaranteed yields in most.

No specific map required; stock up early in any match. Hospitals and clinics boost odds, but they’re PvP magnets. Carry extras for Koschei runs too. Dead drop at your convenience.

Dead Drop Locations and Strategies

Dumpsters accept all three items interchangeably. Al Mazrah has six (e.g., Al Mazrah City, Observatory), Ashika four (Port, Town Center), Vondel new ones in urban zones.

• Al Mazrah: Sa’id City (central), Taraq (south), Al Mazrah City (dumpster hub).
• Ashika Island: Tsuki Castle, Oganikku Farms.
• Vondel: Near Market and Zoo for quick access.
• Koschei: Shopkeeper area—high risk, low reward.

Strategy: Complete all drops in one session on your preferred map to minimize travel. Use vehicles for speed; watch for campers.

Advanced Tips for Efficient Completion

Combine with other missions—Koschei runs pair well with exfils for multiple factions. Loadout essentials: Gas mask, self-revive, and suppressed weapons for stealth.

Solo vs. Squad: Solos favor Vondel caches; squads clear Koschei faster. Track progress in the faction menu; partial completions save.

Common Pitfalls: Forgetting radiation gear (instant death in Koschei), dying with items (non-shareable), or ignoring hidden caches (Hydrogen Peroxide killer).

Rewards and Progression Impact

Finishing unlocks Crown Tier 4 missions, with the Double Weapon XP Token lasting one hour—perfect for double XP events. 10,000 XP pushes reputation, revealing more contracts.

Frequently Asked Questions (FAQs)

Can I complete Chemical Sourcing on one map?

Yes, especially Al Mazrah or Vondel; source all items and drop locally.

Is Sulfuric Acid extractable?

Absolutely—it’s a persistent mission item for cross-session use.

Where are hidden caches exactly?

Interactable orange boxes in walls/buildings; use community maps for pins.

What if I lose a chemical?

No penalty; just farm another—progress tracks per item.

Season changes affect locations?

Core spots stable since Season 4, but check patches.

Conclusion

Chemical Sourcing rewards preparation and map knowledge. Master Koschei for Acid, caches for Peroxide, kits for Blockers, and drop smartly for victory. Grind smart, exfil often, and level up fast in DMZ.