Food grade eh?
There's a video somewhere of monsanto rep stating that roundup could be drank. He sounded convincing until asked if he'd take a sip on camera.
How many people drank out of the cancer causing bromate laden reservoir before they discovered the problem? Who's to say they got it right this time with food grade balls? But it's OK cause everyone was all smiles in the video.
Maybe we shouldn't be so ready to accept what we're told is safe.