»BART to pigeons: Come on feel the noise

BART spends $150,000 annually to combat the noise of rock doves, better known to city dwellers as a rat with wings. The current approach, apparent at the 16th Street Station and others, is to blast them with the sounds of predators. The name of their spokesman, Linton Johnson, caught my eye. Why not play some dub instead?
I wonder how much BART spends on ridding the 16th Street Station of dirty needles and used crack vials.