Use damp cloth to clean the small stains to avoid repeated washing. Without hesitation, you can use the cleaning solvent to clear the stains that is on the down sleeping bag.
It is advisable to wash the down sleeping bag by hand in the tub. To wash, you may use mild soaps. Avoid detergents, and avoid adding fabric softeners. As you have invested a lot over the bag, it is good to use the down cleaners that are especially prepared for the down products.
Use warm water to fill the tub and use the recommended volume of down cleaner. The key objective is rinsing the bag all out. While the down is in the sack, put the bag into the water and leave it to wet totally. Pull the down sleeping bag from the stuff sack and gently squeeze the soapy water throughout the bag. Take care of scrubbing the dirty places like head and foot. Without hesitation, you may use the cleaner directly on the worst areas. Of course, the cleaner will not remove the entire dirt. Leave the down sleeping bag to soak up to at least an hour. It is important to transform the soapy water at least twice, and do not change it several times. You have to rinse the bag with clean water numerous times to bring the soap out. Bringing out all the soap is a critical one; of course, the manufacturer’s instruction is to rinse several times. After each rinse, empty the tub to let it dry. You should be careful about the stitching, as it may be tear loose. After each rinse, press the bag to get the water out.
After your last rinsing, move your down sleeping bag carefully to the machine. The washing machine will allow using the final spin cycle to remove more water and will save the dryer time.