While black fiberglass tissues can be used in homes or businesses, it's important to take necessary precautions. Fiberglass is made of fine glass fibers that can be inhaled and may cause irritation to the skin, eyes, and respiratory system. Always wear protective gear such as gloves, goggles, and a mask when handling fiberglass. Ensure proper ventilation to avoid inhaling fibers and clean up carefully to prevent the spread of fibers around the area. Consult material safety data sheets (MSDS) for specific safety instructions related to the product you are using.