I have tried different sizes from the window stainless screen, black plastic
window screen, 1/8 inch, 1/4 inch, and the metal queen extruders.  Small Hive
beetles, and wax moth larvae will clog up on the screens and return to the
brood area.  If the 1/4 inch or the queen extruders are used the bees will
remove and are able to protect the brood area.  The debree from the small
hive beetles will clog the Queen extruders faster than the 1/4 inch.  If you
use the side 3/4 inch drill holes Drone and workers with beetle larvae will
keep the hive healthy.  The hive with the 1/4 inch wire will go thur the
small hive beetle attach and not swarm.  They will remove and rebuild.  Weak
but not lost. Michael Housel natural without chemical for pure natural honey.