Thank you very much for the threads Tom – we found it very helpful.
Yes, I reported the problem to Wood and Pilcher a few weeks back and they sent out a pest control expert to come and assess the situation. When it was established that the mice were not in our apartment at that time, but only behind the kitchen cupboards, in the walls and the ceiling, we were informed that it is then the responsibility of the block manager to sort the problem. They contacted the block manager about this about 3 weeks ago, but we have yet to hear anything back. So I think it is clear to deduce that the block manager is not going to do anything about it.