Pincers on either side of the machine picked the bugs off of the leaves and threw them into a tray of kerosene below

The paddles on either side of the machine whacked the leaves, hitting the bugs off the leaves and into a tray of kerosene below

Nozzles on either side of the machine sprayed high power jets of water at the leaves, knocking the bugs into a tray of kerosene on the other side of the row

None of the above