The premisesExplain how the affected space is used
For a CR8 visit, say whether people sleep, cook, work or store belongings in the area concerned. Those uses matter when arranging access and discussing precautions. If the signs are outside, identify the exact place; an outdoor sighting does not by itself establish a problem throughout the building.
What you have noticedSeveral clues can still have separate explanations
Keep an account of insects, damage or noises without assuming they are linked. A photograph of the actual pest is helpful, but the timing and position also matter. We compare the reports with what can be inspected, considering which concern needs control and which needs further checking first.