Principles of preventive medication for eel diseases and how to use the hanging bag method

Also called the hanging basket method. Bags or baskets containing medicine are hung around the feeding ground (platform) to form a medicated zone, so that when rice field eels enter this zone to feed, pathogens on their body surface are killed. This method has the advantages of using a small amount of medicine, being simple and convenient, being safe, and having few side effects. However, it also has the disadvantage of not completely killing pathogens. It is generally used to prevent diseases.