Hello all. This is my first time here.

We have two cats; a spayed female about 9 years old and a 10 year old
neutered male. We have our litter pans in the basement and both of
them are pretty good about using them so long as we clean them
regularly. We use Tidy Cat Multiple Clumping litter and two oversized
pans.

For a long time one or both have been peeing where the bottom stair
riser meets the basement floor and wall. We have never been able to
catch one of them doing it so we don't know if it's just one or both.
We have had them to the vet's office and both were pronounced healthy.
All the vet suggested was buying some of the expensive urine odor
removers and/or cat repellents, which we already own.

The last thing I tried was thoroughly cleaning the area with a citrus
cleaner and then soaking an old towel in the solution and laying it
across the area. Someone had suggested to me to cover the area once it
is clean with newspaper. They said most cats will not urinate on
newspaper. Well, ours will.

I have considered thoroughly scrubbing the riser, wall and floor where
this is happening and then once it is dry painting it with Kiltz
Paint, but have no idea if this will help.

By the way neither of the cats objects to using the same pan as the
one so long as they are cleaned on a regular basis.

I would appreciate any constructive suggestions so long as they aren't
the kind that say something like, "Give your cats away." They are a
part of our family and sleep on our bed along with our three dogs most
nights.

Thank you.