Jimmy Gunawan shows how to use the Geometry Proximity inside a Simulation Zone with Blender Geometry Nodes.

This new tutorial from Blender Sushi Jimmy Gunawan shows how to set up an animated deletion effect using Geometry Proximity and Delete Geometry Nodes that run within a Simulation Zone to create an animated effect of Suzanne gradually being eaten away.

Blender’s Simulation Nodes work with “simulation zones” that you can use to create custom physics sims procedurally. “Simulation zones allow the result of one frame to influence the next one. That way even a set of simple rules can lead to complex results, with the passing of time.”

Also, check out this tutorial by Johnny Matthews that introduces working with Simulation Nodes.