WD-40 has been around for ages. I grew up with my dad always having it around using it for who knows what. It's a lubricating product that has about a thousand different uses. You can use this product to loosen bolts that are rusted on. It fixes creaky door hinges. It gets rid of sticky residue that is left over by tape or stickers. I've heard people use it on their cows to keep flies off of them. Lubricate guitar strings. The list goes on. You simply spray it on the surface and you're good to go. The product now comes with a "smart straw" that you don't have to worry about losing like you used to. Problem with that is if it breaks off you're kind of out of luck. So it has it's good and bad things. A lot of people don't like the scent of the WD40 but I actually do. Does that seem weird? It does have a very strong smell and needs to be used in a ventilated area. I highly recommend this product, it's very versatile!