I’ve used them on lakes in the past for sunnies…not for a couple years though. One reason is that they aren’t readily avaiable unless you buy them through mail order.
Most of the time they work well…but they when the sunnies get finicky and just sit there smelling your bait or try sucking it in, it seems like they are too big..and maybe hard. A wax worm on a tear drop swings easier in to the mouth of a gil and is smaller. I’ve seen this by using a camera.
I’ve put a meal worm down and if I didn’t have a camera, I would think there was nothing in the hole…using a waxy..fish on!
So, I guess what I’m saying is that when the gills are biting…it’s not a problem and anytype bait will work. When they become finicky smaller (wax worm) is better.
Last I checked they were slightly more expensive too.