Bird droppings carry several diseases. Among them are salmonella,
fowl typhoid, blastomycosis, histoplasmosis and over 60 others. Most
pest birds -- pigeons, sparrows, starlings and swallows included
-- also carry mites which can invade living spaces and inflict bites
similar to fleas.
Bird droppings are highly acidic-we've all seen what a bird dropping
left on a car roof for a few days can do to the paint. We have
seen sheetmetal flashing eaten through by accumulated droppings,
paintwork ruined, drains blocked and windows stained. Wet bird
droppings can be a slip and fall hazard as well as unsightly. Patrons
entering a restaurant will wonder at the conditions in the kitchen
if they have to step over a pile of bird droppings to get in the
door.
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