Hand weeding also works, without any of the worries about poisoning people, pets or soil, or affecting the climate by burning fossil fuel. It’s fairly easy to pluck out young weeds, roots and all, especially soon after a rainstorm. The hook end of a painter’s 5-in-1 tool can be very helpful in narrow gaps between bricks. But it’s nearly impossible to completely pull big weeds with thick taproots, such as mature dandelions, or established clumps of a runner-forming weed, such as Bermuda grass.
Jeanne Huber -https://www.msn.com/en-us/lifestyle/home-and-garden/how-to-get-rid-of-weeds-that-sprout-between-bricks