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# removeModifiers(at:)

Removes particle modifier blocks for the specified stage of the particle simulation.

```
func removeModifiers(at stage: SCNParticleModifierStage)
```

## Parameters

`stage`

The stage of SceneKit’s particle simulation during which to call the block. See [`SCNParticleModifierStage`](/documentation/SceneKit/SCNParticleModifierStage) for allowed values.

## Discussion

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