What will reduce the likelihood that crickets will move into a structure?

Treating the exterior perimeter of the structure with insecticides is effective in reducing the likelihood that crickets will move into a structure. Insecticides specifically target pests, creating a protective barrier that deters them from entering. When applied properly along the foundation and perimeter of a building, these treatments can significantly decrease cricket populations close to the structure, limiting their ability to infiltrate indoor spaces.

The other options do not provide effective solutions for preventing crickets from entering. For example, planting more vegetation around the perimeter can actually attract crickets, as they thrive in such environments. Leaving lights on outside can also draw crickets, as many species are attracted to light sources during the night. Building higher barriers does not necessarily impede crickets effectively, as they are capable of jumping and finding their way over small obstructions or gaps. Thus, applying insecticides is a strategic approach to managing and reducing cricket invasions.