the old rubs will be dry and dark.some from years past will have bark starting to grow around it.

fresh rubs will be light brown or white.some will have sapp running out. look under them and you will find the shreds of bark from new ones. after you see one new one and one old one then you will see the difference. hope this helps.

I am not a hunter I am a whitetail population reduction specialest

remember keep your back to the sun, your knife sharp, and your powder dry.