What once started with research into the use of badger tunnels using ink pads, has grown into a field in which we have become national experts: the monitoring and use of wildlife facilities by animals. In addition to ink and sand pads, pitfall and walk-in traps, we also use the latest techniques such as (web- and infrared-) cameras. Every year we monitor approximately 40-60 wildlife facilities spread across the country and share our knowledge at symposia and workshops.