Hello, Persistence. It can be an ongoing situation.
Preventive application can start your growing season.
Heres a link for your consideration, the seasonal weather timing may be important
WeedBGone is another tool for spot application.
Do you wish to establish week control using home remedies or purchased chemical ones?
There are many natural household type of ways to eliminate your weeds, these very helpful links from Hometalk are a great resource.
Best wishes on your war with weeds-Happy gardening!
I also suffered with a lot of weeds, especially Creeping Charlie! At one point, two thirds of my lawn was taken over. I tried everything under the sun. I finally tried Spectracide Weed and Feed. I mixed a much stronger solution than the instructions said. Used a handheld sprayer and really wet the "lawn" down with no rain scheduled for the next few days. Killed the Charlie/weeds and the lawn came back stronger than ever. I still get some Charlie coming back every so often, so I pull out what I can and spot spray it along with other weeds as general maintenance.
Don't use bleach, salts, or vinegar on concrete or concrete pavers, which can be damaged, over time.