Keep the trap area at light level 5 or below. Glimmerlings become aggressive (and drop better loot) in darkness, including a 5% higher Malo chance.
The Piston Trap is not a single item. It’s a 3x3 redstone-mechanical structure designed to apply constant pressure on a spawning area. Unlike a simple spike trap or lava blade, the Piston Trap mimics a natural “crushing” environment, which is the only trigger for Malo shards to drop.
Even with a perfect trap, Malo drop rates can be frustrating. Use these enhancements to improve efficiency:
