I would set up a camera to record it (on a timer if it's always around the same time), and then as soon as you hear the sounds, check the video to see if it is a ghost, or if it's a rat dry humping the bar of soap. :P
@WiiMiiSwitch No thanks - I'm not gay ;) lol
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I'm Guy 3.0: exclusive, high-end, good listener, cooks and bakes, paints, and would love to go shopping. LOL