When is it advisable to use frightening tools for pest control?

The use of frightening tools for pest control is most effective when pests are first observed. This is because early intervention can prevent pests from establishing themselves in an area and causing more significant damage or disruption. When pests are detected promptly and frightening tools are deployed, it may deter them from becoming a persistent problem.

Employing these tools at the first sign of pest activity can significantly reduce the population and prevent the pests from breeding and spreading further. Using frightening methods too late, after infestations have become established, may prove less effective, as the pests may become accustomed to the deterrents or other methods may be more needed for whatever stage the infestation may be in.

Considering the context of the other options, they do not align as effectively with pest management principles. For instance, using frightening tools only during specific times, such as evenings or winter months, may not account for the actual timing of pest activity. Using them only after other methods have failed also doesn't leverage the preventative advantage that early detection and control provide.