Not so much a 'tool' as an approach.
With the introduction of cane toads (Bufo marinus) into north Australia in 1935 to combat beetles in sugarcane, we added a new threat to our wildlife. Ignoring beetles, cane toads proceeded to decimate the smaller native creatures (frogs and other amphibians, snakes,birds, etc.). Crows used the SOP so well proven on their prey and attacked the head of Bufo and most died as a result of the poison glands there. Some high-IQ crow worked out the safest way was to tip the critter over and now this has spread through the crow population.
Homo sap has 'developed' a variety of tools to counter the cane toad.
* a golfing 7 iron (lifts object over fence into neighbour`s yard)
* put toads in bag. Tie to car exhaust. Start car.
* bag and kill in freezer (post warning notice on door for midnight snackers)
* use vehicle to press road 'carpet')
* drop salt or disinfectant on individual(sure, but slow method)
* flatten with shovel (usually takes 6 whacks)
* kamikazi approach (fill toad with LP gas. Drop on bar-b-cue)
For those unacquainted with Bufo
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