Control how particles are removed from the Particle System.
| Disabled | Particles are removed when their age exceeds their lifetime. |
| PauseUntilReplaced | Particle ages pause at the end of their lifetime until they need to be removed. Particles are removed when creating new particles would exceed the Max Particles property. |
| LoopUntilReplaced | Particle ages loop until they need to be removed. Particles are removed when creating new particles would exceed the Max Particles property. |