We've been having a problem with inappropriate peeing.

The Phantom Pisser seems to be targeting soft things on the floor
(coats, clothes, bags, etc.)  I've had both my winter jackets pissed
on, my carry on bag, a pair of jeans, my canvas sneakers, a sleeping
bag, blankets, and the cat bed.

The other week we noticed the cat bed had been pissed in so we washed
it, dryed it, put it on the floor.  We were washing the bedroom litter
box when along came a Nox.  She stepped into the cat bed,
sniffed....and pissed.  Dylan yelled and picked her up.  She just kept
whizzin' along.

Thing is, we aren't sure if Nox is the Phantom Pisser or if she just
mistook the cat bed for a litter box since the real litter box was
gone and the Phantom had hit the cat bed the day before.

Anyway, we took Nocturne to the vet and she has a clean bill of
health.  We asked for a urinary test and it came back normal.  So
either Nox is pissing for stress reasons or else she's not the
Phantom.  We got more feliway to plug in to try to chill her out.  We
had to throw out the donut bed.

Now...last night Tyche was poly in my carry on bag.  An hour later, we
smelled a smell and there was a pee puddle on it.  Tyche was sleeping
in that donut bed AFTER the Phantom Pisser pissed it and BEFORE we
washed it.  It seems like wherever Tyche nests, the Phantom Pisser
hits.  We are wondering if Tyche is peeing her beds to mark them?  Or
if someone is trying to "claim" them FROM Tyche and so, peeing on
them?

We are hoping to take Tyche to the vet next week.  I'm so frustrated
that I can't lay out my clothes the night before any more (That's how
the Phantom Pisser got my jeans).  I have to keep all my closets shut
tight now, and no more polying in drawers for kitties.  I really hope
the Phantom doesn't pee on the bedding or couch.

Any advice?

--Fil

PS we have 4 litterboxes, scooped daily, litter changed and box
scrubbed every second week, all uncovered, in 4 different rooms of the
house.