The PETA Multi-Purpose Dispenser is designed to use crystalline salts directly without the need to make up a solution. The required dose of solid or liquid material is placed in the container and taken to the trough where water is then added. The use of solid material means that a larger herd can be treated with a single dispenser. However, if multi mineral mixture containing MonoZinc is used, it is advisable to premix and let cool to prevent blockages.