“You can catch fish by chumming the water with soap.”

The idea that one can effectively attract fish by "chumming" the water (Review) with soap likely stems from a misunderstanding of fish biology and the true purpose of chumming. Traditional chumming involves distributing natural food particles, such as bait fish, blood, or ground-up offal, to create an appealing scent trail that lures fish to a specific area. The misconception may arise from assuming any strong-smelling substance would attract fish, similar to how humans perceive scents.

However, scientific evidence reveals that soap is not only ineffective but also harmful to aquatic environments and fish. Fish possess an incredibly acute sense of smell, far more developed than humans, making them highly sensitive to changes in water chemistry. Soaps and detergents contain surfactants, phosphates, and other chemicals that act as pollutants. These substances can damage fish gills, strip away their protective mucus layers, making them vulnerable to disease, and harm the smaller organisms that fish feed upon. Moreover, phosphates in soaps can trigger harmful algal blooms, which deplete vital oxygen in the water.

Despite clear scientific warnings, the myth persists, sometimes fueled by anecdotal reports, particularly among catfish anglers who claim success with certain soaps like Ivory or Zote due to their fat content and slow scent release. While some fish might bite, this does not negate soap's toxic (Review) effects. Using soap to attract fish is an irresponsible and potentially illegal practice that pollutes water and endangers aquatic life, standing