I would give them a few more days to chill and try again. What time of day/night have you been trying? I've had some in the past that acted sketchy like that where they would strike but miss. They would eventually hit their mark though, and it was all good from there...Next time you do try, I would definitely wait until night time...
I would say try some hopper mice as that can work wonders, but I wouldn't give up on rats yet...