pretty effectively. But getting every nook and cranny is hard. A bleach job is called "disinfecting" and very pointedly NOT "sterilization".

Seems to me that the residue, while not viable, should still be at least somewhat identifiable.

And if the trailers were bio-weapon production facilities - that's the major world-threatening program? That's what we went to war over? That's why we changed the rules of warfare in ways that give every two-bit dictator an excuse (hey, his economy is growing faster than mine, he might buy weapons...) to invade his neighbor? That's what we cashed in all our 9/11 goodwill chips for?

Yeah, in the right circumstances the germs those trailers could have cranked out could have done some damage. And in the right circumstances, a cow can burn down Chicago.