Fill up a bucket
First of all, get a bucket and add one or two gallons of water. After filling up, you need to mix laundry detergent into it. Remember to pour warm water in the bucket.
Detach the mop head
After filling up the bucket with water and detergent, you need to detach the head of your mop. Dust mops come in different types so you need to follow proper instructions in removing the mop head. You can pull it out by uniting it first or by removing it as it is from the metal frame.
Place the mop head in the bucket
Next you need to put the mop inside the bucket containing warm water and detergent. Then stir the head inside the bucket with help of a large spoon or dowel. Leave the head in the soapy warm water for almost an hour.
Soak it again
After placing the mop head in the soap water for an hour, you need to drain the water. Pour in fresh water and add laundry detergent again. Stir the mop head once more in this solution and leave it for few minutes.
You need to rinse the mop head with warm water after soaking it again. Then rinse it again but use cold water this time. In the end, hang it to dry. In case the weather is warm, you can hang it outside.