We have some creeping rugs here, but none that appear to grumble, at least in the daytime. And if tentacles are being discarded, I suspect a cat is hiding them under the sofa.
You undoubtedly have the best of both worlds. Rugs that don’t grumble noticeably, and shed tentacles being discarded at NNB’s house rather than yours, unless you have a very severe mess under the fridge. If it doesn’t smell funny, I’m not worried.