How Nixon dealt with bird poop

Improbable Research - “In his previous inauguration, Nixon had noticed that there were a large number of birds in the trees, and didn’t like the thought of being pooped on as he drove down the National Mall in Washington DC in an open-top limo. Nixon ordered that the pigeons were to be removed – and so the US government spent some $13,000 on a pest spray, Roost-No-More, to get rid of the offending birds.” Polly Chapman tells the tale, in Chemical World‘s “Chemistry In It’s Element” podcast.