Humidity Hazard: Relative Humidity > 75% Breeds Mildew Storage Rule: Breathable Canvas Bags (Never Sealed Plastic) Natural Dehumidifier: Silica Gel & Neem Camphor Sachets

During the Indian monsoon season (July to September), ambient relative humidity frequently surges above 85% in Mumbai, Kolkata, Chennai, and Kerala. Storing expensive winter quilts, heavy bedcovers, and wool blankets in non-breathable plastic zip bags is a recipe for disaster: trapped humidity condenses into moisture, feeding black mildew (Aspergillus niger) and producing stubborn musty odors.