For almost two months, the football association A.H.C. Heracles from Almelo in an AlcetUltraSound bird protection system. Since that time, serious dirtying of the stands is a thing of the past.
Pigeons no longer show themselves. The rafters in the roof of the grandstand have long been a popular place to stay for various types of birds. With the installation of the AlcetUltraSound bird defense system this is no longer the case. This makes a significant difference in cleaning and maintenance costs.