Probably per-emegent. Stronly mixed broadleaf killer for the rest of it. Or a complete weed and grass killer to do it all.
NOTE: The per-emegent will alway prevent grass seed from sproting for the bulk of this season, so if you plan to spring seed skip it.
NOTE: The per-emegent will alway prevent grass seed from sproting for the bulk of this season, so if you plan to spring seed skip it.