No one is spending their money to give your kids free drugs on Halloween. I saw a similar story from the local news channel about marijuana edibles being passed out. As the original article says, poisoned candy is not really a thing. I'd be more concerned about your kids being hit by a drunk (or distracted) driver on Halloween than eating something poisoned.

Someone gave my brother a marijuana cookie one time when he was about nine, but it wasn't on Halloween. Seems like giving out edibles from your own house would be an easy way to get a mob of pitchfork-weilding parents on your lawn.

The professionally produced kind are all labeled on the actual food surface with some sort of impression or imprint that's unmistakable unless you're completely innocent of any knowledge of the world.

This is why people don't trust the media. They make up a story out of nothing or stretch it to to a point where it has no relation to what actually happened. This article for instance is given a title and claim that bath salts are being mixed with candies but provide nothing to back it up. The video points out the drugs are being made to look like candy, not being mixed with it. They pull in two unrelated sources to drive buzz. Police found drugs in Franklin County then the reporter went to their own Sheriff for a generic candy statement. It is about 650 miles between the two counties.