Perhaps a fine mesh? Or you could let your chickens run through and gobble them up. Have you tried soapy water spray?
My chickens won't eat them either. Lol. No, we haven't tried soapy water. Never heard of that one! But I'd try about anything at this point.
My chickens won't touch a potato bug or larvae. But I loved the shop vac idea. Bet it made a mess of the vac! If you have enough potato plants to justify the expense, you can spray them with BT. That's only toxic to potato bugs. If you don't let your chickens in the garden, Sevin does a good job. Hand picking works unless the infestation is severe. I wonder if a garlic and soap spray would work?
It really didn't. Just dumped them all into a coffee can, dumped in some gas, & lit em up. Lol
What is BT?? We have 140 hills of potatoes, hand picking is HORRID! Sevin hasn't worked at all for us. We've always used that, but this year its just not doing anything.