Catfish Pro Spicy Mack 24mm boilies are large, 24mm baits designed specifically for targeting catfish. They use a new spicy mackerel formula and are glugged in a Spicy Mack fish sauce to make them fiery and irresistible to catfish. The larger size helps avoid most nuisance fish, such as carp, when fishing over a bed of pellets, groundbait, and chopped boilies, where they will score well.