Hope your holidays are enjoyable!

I'm finding some very persistant ants getting into my NUC feeders, and now a pollen trap. Do you find you any effective steps against ants? I've tried diatomacious earth, I've made some poltical sign poison traps with ant gel (and put them between the collection try of the pollen trap and its bottom, away from pollen and bees), but the ants just keep showing up...

Last night I put a perimiter band of poison powder down around the hive stand

I've read that ants don't do much harm, so I've never really tried to combat them aggressively; but them getting into a pollen trap is little more than I am willing to accept on a live and let live basis. Your thoughts and experiences are appreciated.