Seem to work some places and not others, have even found they work on one lake in a complex and not another. |The lakes they work in though, I have found I get a bite when all other baits are failing. Expensive though, so I only use them as a change bait.
Iv had two sizes and never caught on them anywhere, a lad in my club done a ton plus on them at one fishery yet can't get a touch on them anywhere else, just depends on the day I suppose.
I still take what I have left with me as you never know