Hi there,
We've had Missy for over 10 years now and she's been known to have a
temper like her "mother" (we have "mother/daughter issues"). That said,
I think she's doing the following on purpose because she's mad at us.
Here's the story.

She likes to be our alarm clock, sometimes at 3am (I get up at 4:30am).
Anyway, she always meows at "daddy" to have him get up, change the
water, and open 'smell-a-vision' (the front door). However, sometimes
she wakes us up too early and we would like to get at least 5 hours
sleep so we calmly tell her that it's too soon. Well, she gets upset,
goes to the downstairs bathroom, and instead of using the litterbox, she
urinates all over the tile floor -- just lets it rip. WHY!!! The
litter-box is just a few INCHES away (it's in the tub) and she uses it
just fine during the day, but in the morning when she's "mad", she knows
this upsets us. And when we clean it up we use special enzymatic cleaners.

Yes, we have had her checked out for urinary problems and nothing has
changed (litter, routine), she just seems to do this in the mornings.
WHY??? Is there any way to stop her? Like I said, she uses the litterbox
just fine during the day so it's not like she's avoiding it. And yes,
it's cleaned every day.

The vet suggested we use Feliway and we purchased the diffuser yesterday
so we don't know if it's kicked in yet.

Any suggestions would be great help.
Thanks

Paula