One of nature’s best energy carriers is (surface) water. The WAVE machine makes efficient use of this. Spraying water at a temperature of 98 degrees (not steam) straight onto the plant means that a large quantity of energy is directed at the plant. This results in the cellular structure of the plant being destroyed. The major advantage of hot water is that it falls through the stones and so reaches the roots as well (water by its nature soaks down). Following the treatment(s) the weed’s roots are so exhausted that growth comes to a halt, with the result of a weed-free road surface.