Pellets can be used either as projectile weapons (causing damage proportional to their size), or they can be thrown into an Onion to produce various items.
- A 1 pellet will generate two items.
- A 5 pellet will generate seven items.
- A 10 pellet will generate twelve items.
Any kind of pellet can be thrown into any Onion, but if the color of the pellet matches the color of the Onion, then extra items will be produced. It is a common misconception that better items are received for matching colors or larger pellets, but in fact, only the number of items spawned changes.
Items that contain concentrated essence of the Pikmin's home world. This essence is the keystone to all life on the planet. Harvested from pellet grass or flowers, Pikmin can take pellets back to Onions to produce more Pikmin. If the Onion and the pellet are the same color, it produces more Pikmin. The number on the top of a pellet tells how many Pikmin must carry it.