A latrine is more useful than a politician it removes the piss from the bull shit.
My apologies, let me know if this one is more to your liking:
Latrines may get rid of waste, but politicians often add to it. Nonetheless, both are necessary to keep things running smoothly. One relieves bodily functions, while the other makes society shit. It's all about finding balance and making sure everything is flowing properly just like a latrine.
