With Mikes Glo Scent Bait Oils you cover two very important aspects about fishing. You mask out human odor and attract fish. Human oder is naturally repulsive to fish. In one scientific study a tiny human skin sample stopped a salmon migration for several minutes in a section of river. Fish have an uncanny sense of smell being able to detect oder as minute as one part per several billion parts of water. Human produce an amino acid called "serene" which is repulsive to fish. This oder in adition to unpleasant smells opf gasoline, oils and plastic can be masked out by Mikes Glo Scent! Fish are also attracted to scents. Mikes produces a variety of natural scents and appealing odors to entice fish. When applied to your live or artificial bait, the scent will disperse in water leaving an araomatic, tantalizing trail which fish can detect. Various scents are more effective for different fish species, so adjust to this situation by using different types of available glo scents.