Am I the only person who read the thread just to see how people would make fun of the mistake in the thread title?
Quiet, ewe.
Maybe he means his pantyhose is haunted. I know I’ve seen some pretty magical things in pantyhose. But I suspect the OP wouldn’t be one of them.
In my house we had two people die in the same room, my father and grandfather. I wonder if that would affect a possible buyer if they knew?
Hi! I want to start by letting you know I once did paranormal research. So I’m sorry if I’m “wordy.” There are many reasons that you may be having these phenomena, beyond that of the paranormal. The mirror, for example: I used to live near a metal press company and right around 5/6a.m. it’d go off. My apartment would literally shift. If your mirror is loose and you live anywhere near a company such as the one I mention, even a landscaping company, that MAY answer that situaion. As for the dogs, I’m more of a “cat person” so I can’t answer much about dogs, but growing up I had a few and I do know they grow lonely and will whine (esp as they grow older) at night as sight goes… or maybe s/he just missed you! 
BUT your question was should you reveal a spirit in the home? I, personally, wouldn’t mind owning a home which was “otherwise inhabited” :D, but I imagine MOST people would. Considering the market, and how rough it’s been, I’d say no. And my reason below is why:
See, a house may, indeed, have otherworldly visitors; however, sometimes the PEOPLE (in our case, you) who see/experience things, do so only becasue they ARE CAPABLE/OPEN MINDED to such activity. The next family may not be that way. Perhaps we are “all tuned” in to some level, some more than others. Have these experiences been at all DANGEROUS in any manner? If not, again, I’d say No to disclosure.
There are times a person, individually, gets a spirit attached to him or her! In that case, sorry to say, it goes with that person usually to wherever said person goes. Eventually. There’s more to that but that’s a book in itself and would not affect resale.
So, unless you know someone who is into this type of thing, and your experiences have NOT BEEN of any DANGEROUS type (no extreme insomnia, depression, arguments where no issues existed prior) then I’d just let the dead be.
I know my answer is off topic, but I am amazed how your adjusting to this! It sounds, to me, that Andy is … Andy still! Thank you for writing, and for sharing that! 
Like cat fur? Is there some kind of sticky spirit clothes-brush I can use for that? Spirit gum, maybe?
Oh God… Cat fur is Farrrrrr worse! Sticks with you forever! LOL!
I’ve had a few things happen over the years that I can’t explain. I tend to be left brained and ignore it but my mother is highly sensitive.
If you remember Nanny and the professor she had like a ‘Nanny-like’ sense about her.
I remember more than once her coming home because she ‘knew’ something was wrong and finding rescue squad and firetrucks in the driveway.
Pesse (going to an actor from ‘Ghost Hunters’ TV show here in Toledo 1/27/2012) Mist
Cat fur sticks to everything but the cat.
Humph, now I’m pissed. I know of two people who have died in my house and not a peep out of them. It also wasn’t disclosed to my by the Realtor. If I find out the original builders/owners also died in there, I’ll have the trifecta as I’m the 4th owner and the house is only 55 years old. I do know the guy who was in it (but did not own it, it’s kind of complicated) before me is still very much alive.