Where are you getting this from?
That is not what the story said. It said they bought $35,000 worth of candy, not that they returned it. Any store that puts an opened bag of returned candy back on the shelf is begging for a lawsuit. If that candy contained smallpox and hundreds, thousands, or tens of thousands died from it, the resulting lawsuit would wipe that store chain off the face of the earth.
Trick-or-treating people you know, who have kids of their own, should be safe. Don't go anywhere else.
http://www.domtalk.com/shownotes.html
This link it to a local radio station I listen to once in a while. Read the "Wednesday" notes. The candy was RETURNED. And, I listened to part of the show and it was confirmed that the candy was put back on the shelves after the health department "couldn't see anything wrong with the candy". Let me ask you a question. Would you eat this candy knowing what actually happened?
There were several incidents. One group (using the same card, IIRC) bought $80,000 worth, and then the FBI and/or Immigration got into the picture, and all we know is that the candy is not accounted for. The $35,000 was one of the three buys that added up to $80,000 Another incident was for a smaller amount, $3,500, I think. That batch was returned, "examined" by the Health Dep't, and put back on the shelves.
If you haven't seen these yet, please take a look:
http://www.freerepublic.com/focus/fr/552988/posts
http://www.freerepublic.com/focus/fr/552863/posts
http://www.snopes2.com/rumors/candy.htm
Status: TRUE
Note that in one case, a large amount was *returned*, and put back on the shelf after being "checked". Did they check *every* piece of it? Impossible, IMO.