bait is not the most effective, only more effective.

If the mouse cage is placed outdoors, fragrant food is effective, because there are fewer outdoor food sources. If placed indoors, the food sources are relatively rich, especially in the restaurant environment, and there are many channels for mice to choose food. Therefore, effectiveness and ineffectiveness cannot be generalized.

In general, the rat cage is placed on the only way for rats to move, and it is ok without bait.