Trout have a very good sense of smell by using special holes called “nares” to sniff in the water. So this means you can increase your chances of catching rainbow trout by using smelly bait. I’ve gone through an entire jar of garlic scented PowerBait before I’ve used any of the other colors because it simply works the best. The color is a mild yellow so it’s definitely the garlic smell that gets trout biting. You can apply these garlic scents to your bait and lures. Nothing smells better than some garlic PowerBait dipped in garlic fish attractant. I’ve also heard anise attractant works well for trout as well as other fish.