As far as the Uhlik repeater goes it sounds like the rats have wisened up to it.
I would advise moving the trap to a different location and pin the doors so that the rats can come and go freely and feed. Wait a bit, ant least until they’re clearing out all the feed overnight (a sign they now “trust” the trap again) and then reset it.
I would advise moving the trap to a different location and pin the doors so that the rats can come and go freely and feed. Wait a bit, ant least until they’re clearing out all the feed overnight (a sign they now “trust” the trap again) and then reset it.