glyphosate is under a lot of scrutiny recently--a WHO report last year concluded it's unlikely to be a significant risk in the home garden, and banning it in garden centers may be overkill. If it does pose a danger, it's probably related to its use in agriculture. Our farmer neighbors in St-Georges-Nigremont were using it rather enthusiastically a while ago, when we return (next month!) I'll ask them what they think now. Many years ago I snuck a litre if a (probably much more toxic) herbicide, Genoxone, into the USA--I imagine that'd no longer be tolerated. I believe it's been banned in Califonia for a while, but there's nothing more effective for poison oak, a nasty plant native to the Western USA to which I have a violent sensitivity. In the past ten years, I've used approximately 300cc's of the litre.