COLORBACK 4,800 Sq. Ft. Mulch Color Concentrate, 1-Gallon, Green Grass Treats up to 4,800 square feet of existing green grass area Makes 10 gallons of colorant For use in a pump sprayer Preserves existing ground-cover 3-4 times longer than non-treated areas, saving time, energy and money COLORBACK 4,800 Sq. Ft. Mulch Color Concentrate, 1-Gallon, Green Grass