They used to sell them here for bait 35 years ago. I bought a Dozen at a buck a piece. We caught fish on every one! We had a 7.5Lb Largemouth bass, a 9Lb Northern Pike, and a 19.5Lb Channel Cat! Best bait for big fish I’ve ever used. I also used regular salamanders I would find in basement window wells and they worked good too. Not sure if it’s legal any more. I believe they eat fish eggs so predatory fish eat them up.