How do you tell if a ghost is in your house?

The most superstitious way, is to get a hammer, and a cowbell, (or a common church bell) and shake the bell and hit it with the hammer at the same time. This, or if you left something there and then come back like 4 min. later and it isn't there, ghosts are very sneaky, so please try the 1st way, or it could be harmful to your health. But mainly, GHOSTS AREN'T REAL, so you don't have to do any of this. And please don't try unless really necessary.! :0 Thanks