Ducks can be a nuisance to landowners and residents because of their droppings and aggressive behavior. Some breeds can be very aggressive towards children and pets. They also cause damage to lawns and gardens by their nesting and feeding activities. They lay many eggs which in turn causes an uncontrolled increase in duck population.
In small urban ponds, high bird densities presents a potential health hazard to the public, as well as decrease the water quality, and lessens the aesthetic value of the property. The most common cause of duck removal is due to their feces staining the sidewalks and when they are found swimming in swimming pools as the pool water can transfer diseases to humans.