How to delete Particles and Fragments without individually selecting them

[Smoldering]

Since im kinda new to the new hud can someone please tell me?

[jer]

Powers>More Actions(the three little squares)

There are some actions in that menu that allow you to clean them up.

[Jar]

You can delete them in the expanded Powers menu.

In the bottom bar, click Power -> Show More (three dots on left) -> Delete All Particles/Dust [or] Delete All Fragments

These options will clear all particles/fragments in the simulation, which can help if things get bogged down.

Edit: Thanks Engie Turtle, beat me to it. :)