Compost

Compost is an activated item added in The Binding of Isaac: Afterbirth †.

Effects

 * Upon use, converts pickups within the current room to Blue Flies or Blue Spiders.
 * Doubles Isaac's current amount of Blue Flies and Spiders.
 * If Isaac has no Blue Flies or Spiders, spawns one Blue Fly or Spider.

Trivia

 * Compost is organic matter that has been decomposed and recycled as fertilizer.

Bugs

 * When using the item and obtaining an item (cards/pills/items) at the same time it will make the picked-up item disappear.