Homebrew PCBs

Hi everyone,

I'm just getting started making PCBs. Actually, I've been trying for some time, but have only recently been able to get good results using the toner transfer method.

Currently I am following the instructions in this guide to make etchant from Hydrochloric Acid and Hydrogen Peroxide and I have been using this solution for my boards: http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/

I have also considered using Ferric Chloride, as it is available from my local Radioshack (although it is a little expensive).

What is the best way to dispose of these etchants? Or perhaps I should ask, what is the cheapest way to safely dispose of these etchants ;-) I'm pretty sure there is a hazardous waste disposal center near me, but that it costs money to take stuff there. Is there any way I can dispose of this stuff at home?

Thanks a lot for your help!