Which inspection technique involves checking various property areas for signs of pests?

The selection of visual inspection as the correct answer is based on its primary function in pest management. This technique involves systematically examining various areas of a property to identify signs of pest activity, such as droppings, damage to property, nests, or the pests themselves. It encompasses a careful assessment not only of visible surfaces but also hidden or less obvious areas where pests may reside or travel.

Visual inspection is critical for early detection of pest infestations, allowing for timely intervention and effective pest management strategies. This hands-on approach ensures that inspectors can gather visual evidence that helps in diagnosing the type and extent of the pest issue.

Other methods like aerial surveys, while useful for certain types of inspections, do not allow for a detailed examination of property areas at close range. Soil testing is focused on analyzing the soil composition and health rather than directly assessing pest signs. Sound detection may be applicable in specific scenarios but is generally not the primary method for routine pest inspections as it relies on auditory clues rather than visual evidence. Therefore, visual inspection is the most comprehensive and effective way to monitor and identify pest issues across different property areas.