Berkley Gulp! Alive! Nightcrawlers are an excellent bait for walleye or bass. These biodegradable Gulp! Alive! Nightcrawlers are great on spinner rigs and on weedless jigheads. Because they absorb 20% more of Berkley's proven Gulp! Alive! fish attractant, Berkley Floating Pinched Crawlers are 20% more potent! When the day's done, simply return your Gulp! Alive! Nightcrawlers to their jar to recharge them for your next outing.