This makes the sound of tiny feet in our loft and subsequent scratching sounds and one set of tiny feet in our lounge ceiling seem much less disturbing.

Poison was applied, and the actual tray disappeared. I wondered if it was eaten whole, and also whether a (pile of) rotting corpse(s) was going to come crashing through the lounge ceiling. Fortunately there were no flies or corpses falling from the sky, so either the offending creature(s) managed to escape or it wasn’t large enough to rot and generate a cloud of bluebottles. Phew.