The ideal material I believe in your country is called "No.8 Hardware Cloth".
One good (and cheap) source of mesh can be old fireguards at Bring and Buy sales - but they usually do need a few minutes work with a wire brush and a lick of paint.
I did once try plastic wind-break mesh which was the right mesh size, but the bees eventually chewed their way through it - so it would appear that it must be metal or nothing.
LJ
One good (and cheap) source of mesh can be old fireguards at Bring and Buy sales - but they usually do need a few minutes work with a wire brush and a lick of paint.
I did once try plastic wind-break mesh which was the right mesh size, but the bees eventually chewed their way through it - so it would appear that it must be metal or nothing.
LJ