Hi,
I live in central Victoria and found a few brown bug nests stuck to the outside of my house over the Summer. They were mainly on the bricks, but some were also on the mortar and one was even stuck to an awning.
Here's a photo of what they look like after the bug has come out:
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I'm just wondering if anyone knows what these are, how to prevent them, and how to clean them up? I've been able to flick them off and then scrub with a brush and rinse with a hose, but the ones on our white mortar actually stained it brown and I'm not sure how to make it white again.
Thanks!