Just Scentsational's 1 quart Concentrate Red Bark Mulch Colorant is a permanent dye which restores color of old faded mulch. This concentrated colorant for mulch turns old weathered and bleached mulch to a bright brand new look. It's water-based， easy to apply， extremely durable， looks natural. It works very well as a permanent colorant on both natural and rubber based mulch. Mix concentrate with as high as 10 parts of water. Easily apply with most spray equipments. Product can stain concrete and other hard surfaces when dry， please use drop cloths and measures to prevent unwanted over-spray. One quart will cover 2，500 square feet.