Typically, rodents are inside the attic only during the late night and early morning. When one of our technicians is inspecting the attic, they typically run out due to the human activity. This is the best time to close any holes as the rodents will be sealed out of the structure. In the rare case that a rodent is stuck in the attic after it was sealed, we will return to pick it up. This is similar to using traps, however, the difference with rodent proofing is that you are securing a long-term solution.