The pencil jet rapidly rotates to clean more area using less water and electricity. Brush accessories are often helpful even with the high pressure spray. These mount on the end of the spray wand. An automatic rotating brush can speed cleaning. The water flow itself causes the brush to rotate.
Various manufacturers offer liquid cleaner injection accessories.
These automatically feed in the proper amount of general cleaner, degreaser, car wash and wax, etc. Some have variable settings to control the concentration. The mini-rechargeable window washer pumps out a cleaner on to a soft scrubbing wand. The other squeegee edge vacuums the dirty water off the glass. Instant Download or Rush Mail Order Update Bulletin No.