If it is a traditional hook-type squirrel cage, you can put some bait around the cage without opening the cage mechanism, so that the mice can get used to the existence of the squirrel cage for a few days, and slowly let down their vigilance before opening the cage. Generally, mice will have a "new reaction". In the first few days after they were released from the cage, they were very vigilant and not easy to be fooled.
If it is a two-door mousetrap, it will be much easier. You don't need to put bait on purpose, you just need to put the cage on the only way for mice to walk along the wall for a few days (mice like to run along the wall, which is in line with their living habits), and mice will inevitably step on the pedal in the middle of the cage and be caught.
20 12 double-door mousetrap