
A logistics company in Japan faced a challenge when preparing a long-unused warehouse for food storage. Years of minimal maintenance had allowed a persistent mouldy odour to develop. Standard cleaning could not remove it, and the company was concerned that the smell could transfer to stored products.
They engaged HYSIA Japan, applying ozone gas disinfection and deodourisation techniques to safely eliminate mould and odours, making the warehouse safe and ready for food storage.
The warehouse presented multiple challenges:
HYSIA’s team conducted a detailed inspection using certified odour assessors and digital odour meters. Mould odour levels were quantified, and a clear target was set: reduce odour from easily detectable to barely perceptible, ensuring it would not affect stored food.

Deodourisation spraying
2. Disinfectant Preparation
On Day 1, the warehouse was treated with a mould-killing disinfectant, applied to all surfaces and dried under controlled conditions to prepare the space for ozone fumigation.
3. Ozone Gas Fumigation & Deodourisation
From Day 2 to Day 5, ozone gas fumigation eliminated mould and odours throughout the warehouse:
4. Post-Treatment Verification
After treatment, the warehouse was ventilated and tested for residual ozone. Both digital measurements and on-site odour assessments confirmed that the mould smell had been reduced to undetectable levels, making the warehouse fully safe for food storage.

Onsite Odour Measurement

Digital Odour Measurement
Mould and odour in large, unused spaces pose both health and operational risks. This project reinforced several key insights:
Mould and persistent odours in warehouses can hinder operational efficiency and pose risks to stored products. Singapore’s humid, tropical climate makes warehouses particularly prone to mould and musty odours if left unused.
HYSIA’s science-based deodourisation and mould remediation solutions create safe, odour-free environments, enabling logistics and food companies to operate with confidence.
Contact HYSIA today for expert odour control, mould remediation, and hygiene solutions.
Read more on how effective pest management protects businesses like yours from costly infestations and hygiene risks.
HYSIA is committed to promoting environmental health and hygiene on a global scale. With over 50 years of expertise in public health, we offer a comprehensive range of services, including Hygiene Audit, Consultation and Investigation, IPM (Integrated Pest Management) and Facility Hygiene Services. HYSIA is your partner for a cleaner, safer, and healthier world. Should you have any inquiries or wish to learn more about how we can serve your unique needs, please don’t hesitate to contact us at info@hysia.sg.
Check out our services

HYSIA Singapore
(Dynamic Sanito SEA Pte. Ltd.)
11 Keng Cheow Street #04-10,
Singapore 059608.
Our Branches
Navigation
Services
Copyright © 2025. All Rights Reserved by Dynamic Sanito SEA Pte. Ltd.
Site Language

Dynamic Sanito SEA Pte. Ltd.
11 Keng Cheow Street #04-10,
Singapore 059608.
Our Branches