Perhaps the most obvious of problems are the droppings pest birds leave, which are not only unsightly, but can cause accelerated deterioration of buildings, structures and statues. Limestone is particularly susceptible, not just to a bird’s droppings, but the acid secretion produced by the fungi that live in them. Cleaning and restoring buildings so damaged can be expensive. Nests and droppings can quickly clog gutters and down pipes. Left unchecked, these bird by-products can lead to timber and structural damage, unsightly decor, and huge repair costs. Pigeons nesting around commercial air conditioning units deposit fecal matter that can get sucked into ducts, grilles and vents, damaging these expensive systems. Bird droppings that accumulate on ledges, sills and signage are unsightly and ruin the image of a business, especially an eatery. Droppings deposited on pavements, entrances and fire escapes makes them hazardous as pedestrians may slip and fall on them, creating a huge legal liability to commercial property owners. One quickly can see why bird control has become so vital to commercial building owners.
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Source: http://www.articlealley.com/article_911929_45.html
Source: http://www.articlealley.com/article_911929_45.html

