First, a bit of background.
Video of Dr. Joe Schwarcz on the science of selenium
Video of Dr Joe Schwarcz: Snacking on Seaweed
Wilson Weedout contains 4-chloro indole acetic acid as an active ingredient which really is quite effective against broad-leaved weeds. It is a naturally occurring plant hormone that triggers the...
Video of Dr. Joe Schwarcz: A Biblical Story Linked to Modern Times