There is nothing worse than playing a good shot only to find your ball sitting in a divot that hasn't been replaced. If every member and visitor tries to ensure they follow the proper etiquette of replacing divots it helps to keeps the course in its best playing condition for everyone.
Our greens staff regularly leave small buckets of seeded sand outside the Pro Shop and everyone is welcome to take one onto the course and use it to fill in divots you find in close proximity to where your ball lies when playing bounce games. Every little bit helps and saves our greens staff a bit of time for bigger projects.