What is your preferred alternative?
I wouldn't use it as a lubricant though past getting seized bolts freed up, but really it's 100% replaced WD-40 for me when working on rusted and old equipment.
If you spray a lock with WD-40, it will lubricate it and loosen it up immediately, but then dust will stick to it overtime and he will end up worse than where you started. Silicone doesn't do that.
I learned this the hard way when I started lockpicking. Bought a huge box of old locks, some were really sticky and I asked online and people said, "Use WD40, it will loosen the pins right up for yah!"
Sure did and then about three months later, they were all gummed up from dust and other particles that stuck to the WD40 like velcro.
It was a good lesson to learn though.
For example[1]
> the main route of PFAS exposure for most Americans:
> Teflon and other brands of nonstick cookware are still produced with new PFAS that may be no safer.
[1] https://www.ewg.org/pfaschemicals/what-are-forever-chemicals...
PFAS are an ecological disaster; Teflon itself is not a concern.
Using teflon cookware around a pet parrot is a well-known way to kill the pet.
Teflon frying pans are supposed to be safe if you never let them overheat, but in practice they're not safe if you have birds in the house.
PTFE is toxic for humans too, but human lungs are more robust than bird lungs.
[1]https://www.paintdocs.com/docs/webPDF.jsp?SITEID=TRIFLOW&pro...