The noise.Not scary,they suck
i don't think they are scary
I guess because of the loud noise they make.
I don't find mine scary at all ? In fact i love plugging mine in and using it with ease My grandmother had a broom and had to sweep everyday To me that is Scary
The old models were noisy and when the air bag filled up ot looked like it was coming to life. Small kids and house pets run from them in fear!
