Mike, thanks for the description of the processes. I read elsewhere about someone who just puts their spent waste in a pan outside and it normally dries for him in a day or so. He lives in Arizona, where they happen to have 8 overcast days per year on average I believe. I presume he is not concerned with the dust etc. I did not think it could work in a cold and damp place like Wicklow. As I recall Misissauga from my past visits it tends to be rather glacial most of the time. :-)

At the moment I am going to try and dispose the still dilute waste at the local place they suggested to me. If that does not work I will have to consider the evaporative approach. I am still not too sure about selenium toner...

Thank you, very much, for the detailed descriptions.
Rafal