They seem to work best on wild fish. But they also work on hatchery fish. Ive heard at times they can entice lockjawed brats to bite when nothing else can.

They seem to work in all conditions from extreemly low and clear to high and dirty.

They are the wonder lure or bait or whatever you want to call them.

But honestly I am a firm believer in the theory that its no so much what you use its where you put it that counts.