HELP: Cat peeing outside of litter box

I have 3 cats and a dog. Two 4 year old female sisters cats and one 3
year old male cat. I also have a 2 1/2 year old Dochound. Over the past
week I found that one of the female cats has starting peeing on the mat in
front of the litter box. I took her to the vet, suspecting she may have a
urinary tract infection, but all the test were negative and she has no other
health problems.

The vet said it is a behavioral problem.

Does anyone have any advice/tips on ho I can go about correcting this
problem?

Thanks

Steve.

"Steve" wrote in message
...
I am a little hesitant to remove the mat, because I think she will
pee on
the carpet under it.

Steve.

Hi Steve.
I would definitely get rid of the mat . She couldd be attracted back
to the smell and also the texture of the mat . You could put something
else down to protect the carpet. I use a plastic runner under Kims
litter tray.
Alison

"Steve" wrote in message
...
I am a little hesitant to remove the mat, because I think she will
pee on
the carpet under it.

Steve.

Hi Steve.
I would definitely get rid of the mat . She couldd be attracted back
to the smell and also the texture of the mat . You could put something
else down to protect the carpet. I use a plastic runner under Kims
litter tray.
Alison