HONU Inc. (Headquarters: Minato-ku, Akasaka, Tokyo; President and CEO: Kenichi Uchida) has released new content titled "Learning from 6,000 Rooms: A Guide to Successfully Converting Smoking Rooms to Non-Smoking" for hotel and ryokan owners, managers, and facility management personnel, offering insights on how to transform smoking rooms into rooms suitable for non-smoking sales. The reason our company receives requests from across Japan is due to the convergence of two key elements: Overwhelming room cleaning capabilities and overwhelming deodorization technology. It is the combination of these two that allows us to handle the conversion of smoking rooms to non-smoking. In hotel rooms that have been used as smoking rooms for many years, even if the odor seems to weaken immediately after cleaning, it can return over time due to air conditioning operation or bathroom humidity. Through renovation work in over 6,000 hotel rooms nationwide, HONU has confirmed that tobacco odors not only linger in the air but also remain in hard-to-see places such as walls, ceilings, bathrooms, air conditioning systems, bedding, and around curtain rails. The guide released this time explains odor sources to check when switching smoking rooms to non-smoking sales, considerations for cost and construction period, paid trial work, consultation for construction avoiding peak seasons, and the causes of odor recurrence remaining in bathrooms, air conditioning systems, and ceilings. Background: The primary cause of failure in non-smoking conversions is "invisible odor sources." Due to the increasing demand for non-smoking rooms, hotels and ryokans are seeing a rise in consultations to convert existing smoking rooms or floors to non-smoking sales. However, the following issues are occurring on-site: - Tobacco odor remains upon room entry - Complaints arise due to smoky bathrooms or toilets - Odors return when the air conditioning is operated - Odors persist even after re-wallpapering - While rooms