GG:
All these guys are being helpful to you, and I'd get someone in to look, too.
But, I couldn't resist telling you and everyone else that, had the noises been in my Gardenia, I'd have definitely blamed them on my New Kitten. At nearly nine months, she's into absolutely everything and is finding new and innovative ways to destroy herself and Her Master even as I write! And she loves to "rattle the cage" in the wee dark hours!
SWR