I kind of think it is more the intention behind how you use the object than the object itself.
Perhaps it is bothered by something, tried talking to it? It is just trying to tell you something but nobody is listening. Have they done something to the house recently? Have they just moved in? It could be something as simple as rearranging the furniture.
Also I recommend doing a little digging into the history of the location. You might find clues as to the origin of the spirit and that will help you deal with it.
failing that you could try getting a priest to bless the house. I know, wrong religion, but that can be just as effective because faith is a powerful thing. It is all about the intention.
Otherwise I recomend they move, putting your kids in trouble is just not worth it.
Nicole