ECOBUST Breaks Rock and Concrete in just 3 Easy Steps, Drill, Mix, Pour and watch it Bust! No jack hammering or explosives needed making ECOBUST a safe, non-toxic, eco-friendly solution. No noise, dust, vibrations, fly rock, fumes or any other environmental pollution so it is ideal for sensitive jobs, big or small. ECOBUST produces an incredible 20,000 PSI of pressure, breaking any strength of rock or concrete into any shape and size desired. Get your next demolition job done quickly and safely, without the mess. Results typically occur within 24 hours, cracks may start to appear within 2 hours, depending on temperatures. TYPE 1 is for temperature climates between 20 to 35C (68 to 95F). 44LBS fills 35 lineal feet of 1.5" diameter hole OR 70 holes at 6" deep at 1.50" diameter.