We provide four datasets: Mark recapture and trapping effort, Grid layout, Chew cards, and Trail camera validation. Mark recapture and trapping effort has one row for every live-trap night, including the unique grid identification code, date of trap check, cumulative rain amount from the 24-hr period before the trap check, unique trap identification, trap status, unique individual rat identification (ID) and associated morphometrics, and rat fate. Grid layout includes the unique grid identification code, unique trap identification, and GPS coordinates of the traps. Chew cards has one row for every chew-card night, including the unique grid identification code, date of chew-card check, unique chew-card identification, and whether the card had been chewed by a rat. Trail camera validation has one row for every chew-card night that had a functioning trail camera and that we identified as having a rat chew in the field. These data include the unique grid identification code, chew-card night date, unique chew-card identification, whether the card was identified as having a rat chew in the field, and whether image(s) of a rat chewing that card were captured on camera.