The DrumBlaster virtually eliminates concrete build-up in mixer drums. It incorporates an extendable boom with a rotating head, uses recycled water, and has a highly efficient electric pump. The unit is safe and simple to use and the mixer drum remains stationary. These units can be used 24 hours a day and easily service a large fleet of trucks. The 4-minute wash-out cycle compares favorably to the traditional wash-out time.