# Sink
A Sink is responsible for deleting [MUs](/components-and-scripts/mu-movable-unit.md). Using a Box Collider, the Sink deletes all colliding ([MUs](/components-and-scripts/mu-movable-unit.md)):
If needed, the Sink can be controlled by a Signal *Delete*. This will activate and deactivate the Sink. The same can be done with the setting *Delete Mus*. If you define a Tag under *Delete Only Tag* only [MUs](/components-and-scripts/mu-movable-unit.md) with the specific Tag will be deleted.
> Please take care that the Sink is situated on the correct layer, to enable collision detection. Usually the sink should be placed on the rvSensor Layer (before 2022 g4aSensor Layer).
Please check the [Realvirtual.io Class Reference](https://realvirtual.io/apidoc/classrealvirtual_1_1_sink.html) for more information about the properties and methods of this component.
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