Mattresses, headboards, and luggage corridors host millimetre gaps ideal for harbourage. Egg → nymph → adult timelines explain why sporadic aerosol spraying without staging fails.

What follow-up achieves

• Targets hidden survivors emerging after heat or residuals relax.
• Interrupts reproduction cycles before new cohorts widen the map.
• Surfaces dormant activity early via inspection photography.
• Approaches complete elimination credibly only across staged visits.
• Restores sleep confidence when documentation accompanies each revisit.

Household alignment

Launder and isolate bedding per technician windows; pause moving items room-to-room until harbourage arcs are labelled; travellers should unpack away from mattresses after GCC or hotel stays prevalent in Kerala travel patterns.

Message from cover: consistency across visits provides complete protection—not a slogan, but sequencing chemistry, monitoring, and sleep hygiene.