I'm sure some of my spices are years old. I bet some of them are 5 years old.
Which of them are must-buys every 6 months or so? Heck maybe 6 months is even too long..
Probably things like paprika and cayenne would need replacing faster than say dried herbs.. I'm guessing onion powder and garlic powder probably last a long time too, though honestly I rarely if ever use them anyways..
What about the indian spices? turmeric, cumin, curry powder, masala etc