You must have Killex confused with Round Up.
Round Up (glyphosphate) is a broad spectrum non-selective herbicide that once in contact with a green leafed plant will shut down the plant's ability to photosynthesize. Even if you get a mist of that stuff on your grass when spraying the heavy weeds and the grass it touches will die. It is biodegradeable and has no residual effect on soil. Many farmers use it to clear out a field of weeds and last years leftover crops before they plow and star seeding a fresh crop.
Killex is a broadleaf weed killer, it won't harm grass. It is very effective on most nuisance weeds. It has been used for decades and so long as you don't drink it or wash your hands in it it is quite safe. It is still available for sale in the GTA although some municipalities are getting trendy with the "pesticides" ban. The idiots don't even know enough to differentiate between a pesticide (insect killer) and a herbicide (vegetation killer).
Just be sure to use the Killex as directed.
