Dish soap serves as a surfactant.
This means it helps the liquid spread evenly across the surface of leaves rather than forming droplets that slide off.
Better coverage may improve contact between the solution and the weed.
Where This Method Works Best
This type of weed-control solution is generally best suited for:
- Driveway cracks
- Sidewalk joints
- Gravel pathways
- Stone patios
- Fence-line weeds
- Areas without desirable plants
These locations typically allow for targeted treatment without risking nearby flowers, vegetables, shrubs, or lawns.