Ha! My guess you are in the north. I’m in the South. So I’m not sure how pre-emergence works for your climate. But if it were me, and I’ve looked at plenty of weedy yards, I would get out the glyphosate, be damned the warning, spray the weeds and start from scratch. Salt and vinegar solution works wonders as well. I’ve also heard gin, the kind we drink, will kill any plant. I don’t know, though. I’ve never left enough gin in the bottle to waste.
I’m in Maryland, planning a move to Florida. Thanks for the info.