Magnetic Fly Screen Door Curtain — Self-Closing Mesh Insect Barrier

Leaving a door open for airflow usually means bugs get the same invitation. This mesh curtain mounts over any standard doorway and closes itself behind you with a line of magnets, so it stays sealed against flies and mosquitoes without anyone remembering to shut it.

No drilling required — it hangs from the frame with adhesive strips or tacks, and walking through with hands full is enough to snap it shut again.