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Always dispose of etchant in an environmentally-responsible manner Dispose of copper etchant with tips in this free electronics video.
Throwing away a credit card without properly cutting it up is an identity thief's dream come true. Considering that some thieves have the audacity to go through your garbage in broad daylight, it's definitely a good idea to make a few cuts in that old credit card to make sure your personal financial information doesn't fall into the wrong hands.
