My 3yr old female cat has started to spray/wee over the past week and I would love to know why.
Some changes to her lifestyle have occurred. We recently treated her with flea powder for the first time. We are going on a holiday and have our suitcases in the lounge room (one of the suitcases has been sprayed/weed on) so is she "punishing" us? Previously if I have been packing a suitcase to go away she has got into the bag and weed on my clothes.
Another thing is that we have had a prowling cat at night which distresses her.
So far she has sprayed on the suitcase, the lounge and outside around the front door/garden area. She is still continuing to use her tray for wees and poos.
So you do think it may be a combination of all three changes or an underlying problem??
Please any advice would be appreciated.
It sounds like you know most of the answers yourself. Stress will certainly cause a cat to behave in the manner that your kitty is behaving.
Seeing luggage brought out will stress a cat who has experienced seeing luggage before and knows that it means you are leaving.
Luggage could also just be viewed as something strange that isn't usually around and therefore she is marking it - marking her territory - or expressing distrust or annoyance with it.
A prowling cat at night can certainly cause a cat to spray.
In addition, having a foreign substance put on her haircoat could certainly stress her. (By the way, it is best to avoid flea powder. It can be very toxic to her and isn't so good for you either. Use Frontline or Advantage once a month topical treatment instead).
The locations that you mention coincide with these mentioned stresses.
HOWEVER, every cat that begins urinating/spraying outside the litter box must have a physical exam and urinalysis by a veterinarian before it is safe to assume that her problem is strictly behavioral. It would be very unfair to assume it is a behavioral problem if she has a urinary tract infection.
I strongly suggest you make an appointment with your vet and if he gives her a clean bill of health, I'm sure he can talk to you about the approach you should take to treat behavioral problems. We also have many articles about this on the website.