How long will compost last?

You are probably correct altho I was told “ new wood “ shavings which is what bedding for horses is(mostly pine or Spruce) contains sap which will burn. Being very familiar with fresh or otherwise manure, I would never use it right up to the base of plants unless they were brown stemmed shrubs. There are so many flaming myths about horse manure 1 being it smells. Ok straight out of the rear end from eating rich spring grass it is a big stinky but even that after a few days conks out. The real mega mazoma pong is chicken manure, holy hell now that is a nostril clearer if ever I smelt anything.Boots should bottle it for blocked up noses