Oh yes -- we know them well. When I bought the house I noticed scratching in the roof from time to time. It took some time, but we finally eradicated the buggers. They had found a loose sofet and made their way to the warmest parts of the roof, turning some of the insulation into confetti. We figure countless generations enjoyed the warmth until that time.
My husband was able to eradicate them by reinstalling the sofet when they were inside, not allowing them out for a few days. Knowing they would be desperate to get out for water, he waited until evening and removed the sofet. They finally emerged and my husband ensured they would not return.
Well, somehow the ones that got away found a way to get into the chimney! We needed to do some repairs to the chimney anyway, which blocked future generations. We also trimmed branches near the house, making it more difficult for them to glide from the tree to the house.
It's been a few years and we haven't had them since.
They are very cute, but be vigilant to ensure they don't extend their welcome INTO your home.
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