Not sure what you're getting at. Are you suggesting that the police would leave bait packages at random houses without the informed consent of the occupants? And then arrest them if they picked them up? That would be nuts, but there's no suggestion of anything like that in the article.
You could have informed consent of some of the occupants and not all e.g. tenants, roommates. I also assume they have informed consent, but there was no explicit mention of this consent in the article.
