Despite their adorably puffy tails, squirrels are a genuine nuisance. So it warms our hearts to see the nerds of the world banding together to battle these furry invaders with what they do best: engineering over-the-top solutions like this water cannon sentry system.

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This is war people, and you need to defend your bird feeders by any means necessary. So if you've got half an hour to spare—and a vendetta against those suburban rats—check out Kurt Grandis' presentation at Pycon US. He details the awesomely geeky turret-mounted Super Soaker he developed which uses custom Python code to differentiate between birds and squirrels, and blasts away the latter when they're detected on a bird feeder. Nerds: 1 Squirrels: 0. [YouTube via Naked Capitalism via BoingBoing]