Good point made by LR5V on using a dry lube. Conventional spray oil and grease will retain any particles of dust and dirt landing on it and turn it into an abraive paste rather than a lube.
Once you have it out for inpection it is worth checking if it is clogged withdirt/dust and just needs flushing out rather than lube. Many plastics are self lubricating and the mechanisms designed to work dry.
Another pointis that many sprays contain a petroleum based solvent to thin them which can seriously damages some plastics.
Also be aware some dry lubes are based on Molydenun or Graphite and are black or grey which is not good if viisible. Those with PTFE ie "teflon" are often clear or at least less visible if that is a factor