@dlowan,
We are in the midst of The Tomato Test. Not the same as the Turing Test.
The Tomato Test consists of leaving a grape tomato in the middle of the kitchen floor overnight. No poison, nothing like that. Just want to see if it's touched, moved, bitten into, etc. So far, for two nights, the tomato has just sat there.
I am thinking we need to add salt, or a bit of lettuce and a tiny jug of vinaigrette.