Just 3 simple steps: Pour quick-set concrete into the mold on any flat surface. Smooth with a trowel. Wait one minute, lift mold and move on. This mold measures 20 inches x 24 inches x 2 inches, and holds one 60 pound bag of premix concrete. Makes a straight path or patio.
Concrete gap filler. Never weed again!! I did this on my patio and driveway. Love it! This is what parks and public places use. Available at Lowes and Home Depot in different colors in the concrete dept.