I am curious about this new product Spruce Weed and Grass killer. https://spruceit.com/why-spruce Does it work on canadian thistle? Is it safe to use in vegetable gardens? Does it leave residue in the soil? It's main ingredients are cornmint oil, geraniol and sodium lauryl sulfate. I read where cornmint oil is an insecticide so will it kill pollinators and other beneficial insects? Hard to find any info out there since it's so new.