Morning Geekzoners,

Was looking at my house on the weekend thinking about how best to clean the brick and wondered about all the weep holes.
I understand the purpose of these, but at the same time thought about how these might be a point of ingress for insects and or mice.
Found this product from Aus, Weepguard.

I've had a look and I don't think it can be purchased from within NZ, does anybody have any advice about an alternative or whether I'm wasting my time installing something like this?

Cheers