The maintenance methods of felt products mainly include the following aspects:

1. **Cleaning**:

- Regularly use a soft brush or vacuum cleaner to gently clean the dust and dirt on the surface of the felt.

- For stubborn stains, you can wipe gently with a damp cloth, avoiding excessive force to avoid damaging the felt fibers.

2. **Washing**:

- If washing is required, it is recommended to wash by hand, not machine wash. Use warm water and mild detergent, rub gently and rinse thoroughly.

- Do not use bleach or strong acid and alkali detergents.

3. **Drying**:

- After washing, the felt should be laid flat on a clean towel, gently press to remove excess water, and avoid wringing.

- Dry naturally and avoid direct sunlight to prevent fading and deformation.

4. **Storage**:

- Keep dry during storage and avoid humid environments to prevent mildew.

- Felt products can be placed in breathable bags to avoid squeezing.

5. **Prevent insects**:

- You can put insect repellent in storage to prevent insects.

6. **Regular inspection**:

- Regularly check the status of the felt product and deal with minor problems in time to prevent further damage.

Through the above methods, the service life of the felt product can be effectively extended and its appearance and function can be maintained.