More of a recommendation to a different website and blogpost, but it's so important that it's worth mentioning! Read all about the different ways you can kill weeds without having to using glyphosate-containing herbicides like Round-Up in the link below. Not only does this extremely potent herbicide harm bees, it has been found to threaten all living creatures...and yes that means humans too.
My favorite of all these methods is the vinegar and salt spray. Does it work as well as Round-Up? If you time it right it does! It works the best on the very hot, dry day and has no effect on the soil pH. The days of spraying things that we don't understand or can't pronounce the ingredients are over. It's just as important for us to treat our yard like the food and products we put in and on our bodies. Give it a read a make the change for a greener, healthier future!