Answer: The most effective means of reducing weeds is to build healthy soils through proper fertilization, irrigation and mowing techniques.
For existing weeds, try spot spraying either with some of the less toxic clove oil sprays, or vinegar or boiling water, or with the vegetation killer glyphosate (Round Up). There are long-handled weeding tools that save the back and get most of the root. It's another way to "keep you on the greens". Weeding is also a great way to keep your body limber and is a task where you can involve the kids. If you pay them "per weed", it could be a good way to start the college fund.
Best wishes with your lawn.
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