There are many factors, which attracts birds during the entire year – vast rivers, fields and dump, attractive for feeding, warm and lightened roof zones. Therefore, the manufacturing facility was a preferable habitat for more than 40,000 birds. They were producing tones of excrements and causing high level of noise. Thus, the company has been investing large amounts of money in order to clean the roof regularly (more than twice a year), as well as to repair the metal construction, damaged by the birds and the employees of the cleaning company.