People always try to give advice to others and in the process they often over-complicate things or create new problems. In All I Really Need To Know I Learned in Kindergarten, Robert Fulghum urges people to revisit their problems and assess them in terms of his ten basic rules- very basic. The simplicity of the rules though strikes a chord and good advice can result from such basic principles.
Fulghum relates some factual information on the beetle in its larvae form and a so-called "sack" that it carries on its back. When it molts it sheds skin which collects (n mess) and gives this impression of a garbage bag which suits Fulghum's principle of cleaning up after yourself.
The bag has another purpose and is used by the beetle to fend off unwelcome ants who would otherwise feed off the beetle. The mess that ensues when the beetle larva hits the ant and the dead skin scatters, is then cleaned up by the ant - a scrupulously clean insect - allowing the larva to get away.
The fact that the beetle cleans up after himself and that the ant apparently gets its just deserves, completes the "moral" of this anecdote.