CAT VACUUMING....Every two weeks a pair of housecleaners comes to clean our house. They ring the doorbell first and then a few minutes later they start vacuuming. Our cats are so spooked by this that actual vacuuming is no longer necessary to send them scurrying up the stairs to hide under the bed. All you have to do is ring the doorbell.
Most cats are like that, right? Which makes the display of cat vacuuming on the right especially remarkable. On the other hand, I've heard that white cats are often deaf, so maybe that's what makes the difference here. Our guys might like it too if the damn thing didn't make so much noise.