Whilst birds are usually a valuable and useful part of the natural world, there are certain scenarios where they are nothing but a nuisance. Birds will attempt to enter your property for a variety of different reasons, but primarily because walls and houses are perfect places to build a nest and start a family. At face value, this sounds nice, but the problem is not the bird, rather what comes out of the bird. Bird droppings, or guano, can be dangerously acidic, meaning the corrosion that comes from birds living in your property for a long period of time can be damaging. At best, the guano will emit a foul smell and at worst will damage the foundations of your house, causing structural damage. Thankfully, there are some easy ways to avoid this calamitous scenario: