Vicious Fishing Bait dye adheres to the outside of your live bait in as little as five minutes. These colors are made to attract a fish's attention more easily. This dye also has smell attractant, allowing your live bait to attract more fish. It is biodegradable, if used as directed, will not harm the live bait or the fish that eat it. It's simple to use and environmentally safe. This dye works on a variety of different live bait such as minnows, shad, shiners, chub, shrimp, mullet, herring, squid etc.