Saw this "Weepguard Brick Vent" available in Bunning's catalog, this is certainly much better than the Weephole vermin I used. But it's not cheap and not sure if can be done by D-I-Y. It would be also be an extra cost if you want your brick layers to install one of this nicely in every weep hole - so make sure you double check with the builder about the extra cost plus the quantity of this Weepguard you need to order.
