Agile as they are and well able to crawl, the worms will easily reach anything on the floor; the only things secure from their attacks will be the pieces hanging from the ceiling.

It is not in the nature of maggots to explore the heights, especially if this implies climbing down a string in addition.
People also use wire-gauze dish-covers.

The trellised dome protects the contents even less than does the meat-safe.

The Flesh-fly takes no heed of it.

She can drop her worms through the meshes on the covered joint.
Then what are we to do?
Nothing could be simpler.