Vigorder Mulch Glue for Landscaping, 35 OZ Rock Glue & Gravel Binder, Fast-Dry Non-Toxic Mulch Stabilizer, Weather-Resistant for Pea Gravel, Pebbles, Pine Straw, Garden Paths & Patios. 【Fast Drying & Easy Application】Vigorder rock glue can be diluted with water as directed and sprayed directly onto gravel, pebbles, and other ground cover materials without the need for specialized tools.