I'm not a rat guy (Norway) so ill take all the tips u can offer.
Trapping a dirt floor crawlspace under a closed in porch. They were feeding on nearby birdfeeder...client stopped feeding birds and I started prebaiting with succcess. Nailed three the first night traps went active and nothing since. Client had four on her porch so I know there are more. Im limited to trapping under porch as pets are issue.
Mixing up baits? Building bucket traps? We have no idea of another food source within 1/4 mile and im seeing limited activity away from the porch area.
Any tips appreciated.

Chip