I have made camp for one or more nights in a pristine wilderness.  At a suitable distance from camp, I have dug a nice cathole and done my business.  Now it's time to sleep.  Should I close my cathole and dig a new one tomorrow, or do I leave open and reuse my cathole and wait until I depart before closing it?  Maybe an open cathole is more likely to attract animals, but multiple catholes leave more traces than just one.