What is the minimum amount of space a rat requires to enter a structure?

Rats have a remarkable ability to squeeze through very small openings, and the minimum amount of space they need to enter a structure is indeed half of an inch. This capability is attributed to their flexible bodies and the lack of a rigid collarbone, allowing them to compress their bodies to fit through tight spaces. Understanding this is crucial for effective pest management, as even the smallest gaps in walls, foundations, or other areas can provide access for these pests. This information emphasizes the importance of thorough inspections and sealing potential entry points to prevent infestations.