Document the storage conditions
Note where the insects appear and whether papers, packaging or fabrics show changes. Include damp areas or maintenance problems you have observed. Keep the description factual rather than treating every small crawling insect as silverfish.
Plan access to the affected storage
Explain whether cupboards, shelving or stored boxes can be accessed. Ask what needs moving and what should remain in place until the concern is assessed. Preparation should be proportional to the affected area, not an automatic instruction to clear the whole property.
Can I ask for identification before booking work?
Yes. Describe the insect and where it appears, and mention an existing photograph. Confirm the proposed scope after the concern is understood.