There are many different kinds of lubricant out there labelled as being great for locks, some we recommend and some we don’t, each with its own pros and cons. Our locksmiths often use Prosolve silicone spray.
Silicone based
Pros: Water resistance and corrosion protection helping to reduce risk of rust, ideal for moisture prone locks especially in coastal areas. Doesn’t attract dust and debris, works in wide range of temperatures, long lasting.
Cons: Can be messy and stain clothes.
Graphite powder
Pros: Dry lubricant that leaves no sticky or oily residue for debris to be drawn to. Long lasting durability, works well in extreme temperatures, and is resistant to moisture, helping to reduce rust.
Cons: A little messy to apply and can clump up mechanisms if you use too much. Also Isn’t great for electric locks
Not recommended Lubricants
Oil based
Pros: Good friction reduction
Cons: Dries out to a sticky residue that dust and debris will be drawn to and is difficult to clean, gumming up locks and making maintenance worse in the long run.
WD-40
Pros: Great cleaner and can help get a stuck lock moving in a pinch
Cons: Isn’t designed for use as a lasting lubricant as it dries far too quickly and can attract more dirt in the long run.