If you are not satisfied with a temporary solution, a moment of pest-free environment, but you would like “uninvited visitors” to finally disappear from your environment, you definitely need the help of a professional.
Under GKM decree no. 5/2004. (I.28.) and Government Decree no. 346/2008. (XII.30.) the maintainer shall provide for the following in relation to de-icing and the failure to do so results in the payment of a fine:
Since the safety of our employees is of great importance to us, we fulfill the cleaning of glass surfaces that are hard or impossible to approach with the help of alpine technique, with a team of highly qualified professionals.