I harvested some broccoli today, picked off all the caterpillars I could see, washed the heads, cut them into florets, picked off a few more caterpillars, washed them again, cooked them, rinsed them - and one still managed to make it onto my plate! Argh. It wasn't moving much by then though...
(PS In fairness there could have been more than one in the plate, it's just that there was only one that I managed to identify as Not Broccoli before I ate it!
)
(PPS For the pedantic among us, actually all of it was Not Broccoli - it was all in fact calabrese. Ho hum.)