When a program is forcefully terminated it is not able to cleanup any of
its resources, as a result dead icons are left in the system tray until
you hover your mouse over them. Explorer does not perform house keeping
and remove any dead icons automatically. This tool runs in the
background, doesn’t require admin rights, and will keep the system tray
area clean for you automatically while only using between ~0.1% – 0.3%
CPU usage. Now your system tray area will always remain clean even if
processes can’t clean up after themselves when terminated. You just need
to install it, that’s all.