WD-40 is a multi-use product that can be used for a variety of purposes. Here are some of the most common uses of WD-40:

• Lubrication: WD-40 can be used to lubricate moving parts such as hinges, door locks, and bike chains.
• Rust prevention: WD-40 can help prevent rust and corrosion on metal surfaces.
• Moisture displacement: WD-40 can displace moisture from surfaces, making it useful for drying out wet electrical equipment.
• Cleaning: WD-40 can be used to remove grease, grime, and other substances from surfaces.
• Removing adhesives: WD-40 can help remove adhesives such as duct tape residue and glue.
• Protecting surfaces: WD-40 can be used to protect surfaces from mud, debris, and other substances.
• Softening materials: WD-40 can be used to soften materials such as paintbrushes and leather.
• Preventing squeaks: WD-40 can be used to prevent squeaks in doors, windows, and other moving parts.
• Removing stains: WD-40 can be used to remove stains from surfaces such as carpet and clothing.
• Repelling insects: WD-40 can be used to repel insects such as spiders.

It is important to note that while WD-40 can be used for many purposes, it is not a substitute for specialized products designed for specific tasks.