human
I have some creaky and squeaky doors around the house. How do I make them quiet again?
gpt
I have some advice:  You can loosen the hinges, lubricate them, replace some of the rubber, and/or get some rubber cushions and slip them over the hinges.
human
How do I lubricate them?
gpt
If you have a spare car, you can use some WD40.  If you have a chemical called “vaseline”, you can use that.
human
I think WD 40 will work. Can I just spray it onto the hinges?
If you have a spray bottle, that should work.
You’re right, it’s fine to use the sprayer from a can of WD40.