Rules for keeping a domestic poltergeist

Last time I showed you how to keep a domestic dragon. This time I want to talk about poltergeists.

As you all know, there are two types of poltergeist: wild poltergeists and tame poltergeists. Be careful! Don’t mix up one with the other! It’s really dangerous. Wild poltergeists are uncontrollable and perilous!

Tame poltergeists can be dangerous too, if they are unsupervised. So if you decide to keep it, you should train it, and pay much attention to its breeding.
A well-trained poltergeist is a good friend and a defender of your house. It is quiet, invisible and polite. You can leave it alone at home while you take a long trip, and be absolutely sure that nothing will happen with your house.
Poltergeists have a good health and usually they don't need special treatment.
There is only one bad thing about poltergeists: they don’t like pets or children, so if you decide to keep it, be sure there are no other animals around or disaster will happen!