The Veterinary Sonotron Mark 2 device comes pre-loaded with treatments with the treatment package you purchase, if you run out and would like to purchase more, don't worry, we have got you covered. You can easily manage your treatment units on the conveniently located LCD display. If you notice you are running low, simply purchase a treatment package or subscription from our options below and your unit will be filled with the amount of treatments you buy almost instantaneously.