Maintaining a lawn is work. Once the weeds are gone, grass can grow well. Getting rid of the weeds is the task this year. Usually, once the weeds are gone, the have a hard time coming back. Hopefully, one maybe two years of this will be enough. I generally don’t like using chemicals. When talking to a toxicologist, he says as long as it is mixed properly and wash your hands, things will be fine. We’ll see.