On 10/16/2013 02:57 PM, Bob F wrote:

1/4" should keep them out, but you could go to 1/8". They both seem to be made
in 48" widths.

According to my calculations based on mouse skull size, 1/4" should keep
out all but the very young, very strong (enough to deform the wire) or
very smart (enough to find an irregularity if there is one) mice.

But I see no conceivable way any of them could wiggle through 1/8".

Alan