What must be included in the inspection report if an infestation is found?

Including a sketch drawn to scale of the infested area in the inspection report is essential because it provides a clear visual representation of where the infestation is located. This helps in accurately conveying the severity and extent of the problem to the client and any pest control professionals who may need to address the issue. A detailed sketch also aids in tracking the infestation over time, allowing for better planning and management of pest control measures.

Furthermore, a detailed report that includes such visual aids can be instrumental in understanding the environment where the infestation occurred, which can provide insights into factors that may have contributed to the problem, such as moisture levels, structural issues, or accessibility by pests. In contrast, other options like a simple statement with no details or only final recommendations would not provide sufficient information to adequately address and understand the infestation, leading to potential oversight in pest management strategies. A list of previously reported infestations may be useful but does not directly address the current situation in a meaningful way without the context provided by a detailed inspection report and measurement visuals.