Tradies might be up in arms over my response, but they can be not the most tidiest of people when it comes to using the lavatory so laying the blame of ‘financial responsibility’ on the culprit may not be as easy as it sounds. My experience is that they leave the door open when they leave for the day anyway, so any passers-by could use and soil the toilet. I suggested to our last lot of tradies that they 1. walk 50 metres to the public toilet in the park at the end of the road. 2. Go to KFC and use their toilet. 3. Go to the service station 50 metres in the other direction and use their toilet. 4. My toilet in my apartment is not available for them to use.