A hotel room may look spotless, but ATP testing tells a more revealing story. Drawing on findings across several anonymous 5-star hotels in Hong Kong, this article explores where organic residue builds up before disinfection and what hotels can learn from the results.

While a visually clean environment may give the impression of being hygienic, it does not necessarily guarantee actual cleanliness. To ensure a truly clean and safe environment, it is essential to adopt a scientific approach to measure surface cleanliness. Among various methods, ATP bioluminescence testing stands out as the preferred choice for its speed, reliability, and cost-effectiveness.