I gave up on the sofa that I had been sitting on during the summer and the smell of down products that I had put out when I changed my clothes ... I didn't seem to be able to clean them at home, but I found a detergent that I could use in common and tried it.
An item called "THE Laundry Detergent" manufactured by Ganko Honpo, a detergent manufacturer in Kanagawa (sold by THE Co., Ltd.). By adopting technology that applies accident handling research on marine tankers, it is characterized by being able to wash various clothing such as cotton, linen, synthetic fibers, wool, silk, and down materials.
In addition, this detergent can also be used for "wiping and cleaning", so I used it for the upholstered sofa that I was curious about.
First, pour water into a tub or tub, add a little detergent and soak the rag.
Wipe along the weave direction of the sofa with a tightly squeezed rag.
Rinse it in the tub again ... the water is black! The surface of the sofa is quite dirty ... After that, the refreshing scent of lavender essential oil drifted and I felt refreshed.
Similarly, if you wipe the inside of the bag, it will be very refreshing (avoid leather materials).
The price at the time of purchase by the author is 2,695 yen with 500 ml. Although it is more expensive than general detergents, only 5 ml (in the case of 30 L of water) is used in one wash. I think you can use it properly according to your clothing. It is also recommended for people who want to finish washing at home as much as possible!