I hadn't thought of that, Conway. I have read that regarding the translucent 1-gallon jugs, but wasn't sure if that also applies to the larger food grade HDPE containers we're talking about in this thread. I suppose the thickness of the plastic doesn't matter when we're talking about residues on the surface of the plastic.

By the way, if anyone hasn't heard about not re-using milk or fruit juice jugs as Conway is mentioning, you can read about it in this FEMA manual. Just search for "milk" and it'll be the third reference.