I have a nasty section of my yard that must be 80-90% weeds. Not to mention it is compacted clay and very rough and clumpy. I want to get this section under control so that it can be nicer next summer. It obviously needs aerated and seeded. I was going to spray some type of weed killer like Weed-b-gone max to kill the weeds and then aerate the lawn followed by a good seeding. Being in WV I suspect I'd do the overseeding in mid to late september. How long after applying weed killer will I be able to overseed? Any recommended products for killing the weeds? There seem to be many species of broadleaf weeds along with crab grass and clover. It's horrible.