When you notice a reddish color around the hinges on your property.
Scrape away the rust with a wire brush the before the hinges seizes up (for safety: wear protective goggles for your eyes)
Use WD-40 and put it on the hinge area. If you don't have WD-40, you can use regular cooking oil.
The most important thing is that there is lubrication for the hinges.
You should to do this every 4 months so that you do not have to replace the hinges in which is more costly than a can of WD-40 lubricant.
