I have tried all the usual brands of laundry detergents in Malaysia such as Breeze, Dynamo, Top, Maxkleen 9, Attack but none of them really works for indoor drying. Clothes which have not been dried under the sun sometimes smell musty. I found the Walch OXI Clean Anti-bacterial Concentrated Laundry Detergent online, and the description says it has an oxygenated formula that dissolves deep inside the fabric, to kill bacteria, remove stubborn stains and unpleasant odour, perfect for indoor drying. I gave it a go, and boy I have finally found an indoor drying detergent that actually works! The after wash scent on the laundry is particularly strong compared to other brands. The clean smell stays even during a rainy day when we are unable to hang the clothes outside to be dried by the sun.