Homebrew PCBs

Hi to everyone.

OK, I am not new to the world of PCB making (using college equipment)
but now I want to make my own at home, staring simple with a PCB kit from 
Maplin (UK).
My question is how to treat the ferric chloride I can get (liquid or 
pellets) to get the most life out of it?
Also, how/where can I dispose of used ferric chloride in the UK?
I have read (on the web, so I am going to take it with a pinch of salt till 
told otherwise) that it is possible to use the liquid as the base for 
concrete, turn it into a lump'o rock and chuck it in the bin?

many thanx for your time,

PK

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