What is the best weed killer for drives?
The best way is with a residual systemic total weed killer. This way it does not grow back for a year. Bromacil or Prometon type weed killers if you can find in your area. The problem is the liquid or granular weed killer has to be absorbed in the ground to work properly. Tightly packed pebbles will not allow it. So you must airate (poke holes in the ground) the soil. A landscaper should have the right tools to do that. Gas and diesel are quite hazardous and should be avoided. Best of luck with that.
