Maintaining and washing slippers depends on the type of material and model, but in general, there are a few tips for maintaining and washing slippers properly:

1. How to maintain slippers:
• Keep dry: After use, store slippers in a dry and ventilated place to prevent moisture and odor. 
• In the right place: Store slippers in a suitable place and away from direct sunlight to prevent fading and damage to the material. 
• Drying: If the slippers get wet, it is better to dry them outdoors and in shaded places, as direct sunlight can damage the texture of the material. 
• Keeping separate: Keep slippers separate from other shoes or any items that may be damaged.

2. How to wash slippers:
• Fabric slippers: For fabric slippers, you can usually wash them in the washing machine on a low temperature and gentle cycle. Before washing, it is best to remove the laces from the slippers (if they are removable) and place them in a laundry bag if possible. 
• Plastic or rubber slippers: These models can be washed by hand or with a soft brush and mild soap. Use cold or lukewarm water for washing and avoid harsh chemicals to maintain the color and shape of the slippers. 
• Leather slippers: For leather slippers, you should use a leather-specific detergent and avoid soaking them. Cleaning with a soft, damp cloth and then applying leather wax to keep the leather shiny is helpful. 
• Drying: To dry your slippers, air dry them. Avoid using a dryer or placing your slippers next to heat sources such as heaters or radiators, as this can damage the material.

These tips will help you extend the life of your slippers and keep them looking clean and tidy.