Mulch

Version 0.29: This article may not be up to date for the latest stable release of Crawl.

Mulch is a term for ammo destruction in Crawl. Every time you fire or throw a unit of ammo, there is a chance that that unit will be mulched. The odds of this happening depends on the particular item used.

• Stones: 100%
• Poisoned Darts: 8.33%
• Javelins, Boomerangs: 5%
• Large rocks: 4%
• Throwing nets: N/A. Nets corrode when creatures struggle out of them and are eventually destroyed.

Brands also can affect mulch rates:

• Dispersal Boomerangs: Always mulch.
• Other Darts: 16.67%

History

• Prior to 0.29, ranged weapons had their own ammo: sling bullets, arrows, and bolts mulched 12.5% of the time. Stones also mulched only 12.5% of the time.
• Prior to 0.24, Exploding ammo existed, which always mulched.
• Prior to 0.16, steel ammo had a decreased mulch rate. Large rock mulch rate was increased in this version.
• Prior to 0.11, enchantment bonuses were available on ammo, decreasing mulch rates.
• Prior to 0.5, enchantment bonus did not increase a unit of ammo's odds of survival.