Lawn Starter Mulch is a seeding companion that contains mulch, fertilizer, and soil conditioners. SWT (seed watering technology) takes the guesswork out of watering with Sparkle crystals that swell and glisten when enough water has been applied. AST (advanced soil technology) improves the physical characteristics of the soil for maximum performance. Easy to apply with any spreader. Safe for people and pets. Covers 1000 sq ft.