Ventilate or soak in water, dry and expand into shape. Installation tools are also very simple, such as nails and glue. Buyers who have used it are recommended to use 3m super glue. Or self-adhesive spray glue, we will also give away some nano double-sided adhesives for everyone to use. As for cleaning, you only need to vacuum and remove dust occasionally. [Safety and environmental protection] Our sound-absorbing panels are made of high-quality environmentally friendly polyurethane foam, non-toxic, non-irritating odor, fire-proof, non-flammable, and will not cause any harm to the human body. The elderly and children can also use it with confidence. We will also give away some nano double-sided tapes for you to use. As for cleaning, you only need to vacuum and remove dust occasionally. [Safety and environmental protection] Our sound-absorbing panels are made of high-quality environmentally friendly polyurethane foam, non-toxic, non-irritating odor, fire-proof, non-flammable, and will not cause any harm to the human body. The elderly and children can also use it with confidence. We will also give away some nano double-sided tapes for you to use. As for cleaning, you only need to vacuum and remove dust occasionally. [Safety and environmental protection] Our sound-absorbing panels are made of high-quality environmentally friendly polyurethane foam, non-toxic, non-irritating odor, fire-proof, non-flammable, and will not cause any harm to the human body. The elderly and children can also use it with confidence.