The pans of kitty grass (in vermiculite/water crystals) had been producing fruit flies, so I put them out on the porch to let them dry out, figured I'd eventually bake the substrate and replant.
The fruit flies have finally disappeared from the house, so today I brought home a pre-grown pot of kitty grass, watered it, put it on the counter... and came back to an entire colony of sugar ants evacuating their newly-flooded home. 😫