Squeaky hinges - resolution?

[LaserTam]

Internal door hinges are squeaking on a couple of doors. Ive tried DWD40 and a silicone spray, made a difference for a day then back to normal. Google reveals a whole bunch of solutions, some of which surely are old wives tales, so looking for real life Pistonhead suggestions on how to resolve - because its starting really annoy.

[LaserTam]

oil is the obvious, but was concerned about residue drips making a bit of a mess of the carpet.