@tucs...I used to have a friend whose family had a fish bait exportation business. The dad brought them up with that business and although we havent been in touch I understand they expanded to nyahururu where labour was cheaper. Another fish bait factory I knew of was closed. This one was in kikuyu. All said I only know this biz from an observers point of view. You may want to hunt down actual businessmen who carry on this trade. It seems strangely subdued though. All the best!