Ooze is a slimy fluid. It moves slower and bounces less. This property is not shared with any other fluid. Ooze is also acidic, so it eats through Dirt. Ooze will cause any level to fail if it enters Swampy's, Allie's or Cranky's pipe. Ooze will kill any Ducks.
Ooze destroys Hot Coals much like how Poison Water kills Algae.
Ooze cannot be held by Balloons as it pops the latter. If it makes contact with a Balloon, the Balloon is also popped.
If water enters Swampy's pipe, his shower will fill with Ooze and Swampy will jump out of the bathtub (identical to his reaction with Purple Water).
If water enters Allie's pipe, her organ will gurgle and the player loses. Allie reacts similarly the same way to Purple Water, except she puts her hands on her hips and sadly sees her organ broken after it produces smoke.
If water enters Cranky's pipe, his algae will be converted into Rock and the player fails the level. He roars after looking at the rock and looks at the player with disappointment and anger.
Failing a Swampy level with ooze (Same as Purple Water)