The two problems, and why it matters which one you have
Cat urine outside the box is not one problem. It is two, and they answer to opposite fixes.
- Marking. Upright surfaces. Standing, tail up. A small amount. The cat often still uses the litter box perfectly well the rest of the time.
- Litter box trouble. Flat surfaces. Squatting. A normal amount. The box is being used less, or not at all.
These four checks come from veterinary behavior guidelines, and they are the reason a plan that works for one cat does nothing for another.
Having both at once is more common than the internet suggests. When that happens the litter box comes first, and not because it matters more. It works faster, and until it is fixed you cannot tell whether anything else is working.
Why everything you bought failed
Look at the list: enzyme cleaner, foil, citrus spray, a deterrent, a second box. Almost all of it is the same idea, which is to make the spot unpleasant.
If your cat is marking, she is not looking for somewhere convenient. She is leaving scent. Making one corner unpleasant moves her one step over. That is not a failure of the product. It is the wrong problem.
The three things people most often find
The litter box got moved into a noisy room
This is the one that catches almost everybody. The box gets moved to the laundry room or the garage because that is where the space is. The problem is usually not the move itself, it is that the room it moved into runs a machine. A washer starting while she is mid squat is enough to put her off that box for good.
A door that used to stay open is now shut
If her route to the box now ends at a closed door, the box may as well not exist. This one is invisible because the box is still there, still clean, still where you left it.
The box is too small, and the lid is not the problem
Two things people are told about litter boxes do not hold up. In a study of 27 cats, 70% had no preference between covered and uncovered boxes. 15% preferred covered and 15% preferred uncovered. Size is the one that showed a real effect: 74 cats across 43 households used a large box 61% of the time against 39% for a standard commercial one. Most complaints about covered boxes are really complaints about small ones.
If you do decide to rehome
That is a real decision and it is yours. Two things worth knowing.
- Tell the shelter or the new home exactly what has been happening, including what you already tried. A cat whose history is known is easier to place, not harder.
- Outcomes are better than the internet assumes, at least at limited intake no kill shelters. What the same study found is that euthanasia was slightly higher for these cats, 5.8% against 3.6%, and that only a minority of those were for urinary reasons.
Nobody who has not cleaned that corner at 1am gets to have an opinion about your decision.
When it is worth paying someone
Three signs. You have done a full plan properly for two weeks and the count has not moved. Your cat has started doing something else too, like hiding all day, over grooming, or going after another pet. Or someone in the house has reached the end of what they can take, which is a real constraint and it counts.
A remote session with a cat behavior consultant runs into the hundreds. One I looked up lists $325 for 90 minutes and $445 to come to the house. If you get there, that is not a failure. It is the same decision you would make about a plumber.
Before any of that, find out which of the two you have.
The plan asks three questions, sorts your spots, and gives you an ordered list built around what changed in your house. Here is what is in it.
Sources: a six year retrospective study of outcomes for surrendered cats with periuria at a limited intake no kill shelter, for the adoption and euthanasia figures. AAFP and ISFM guidelines on house soiling in cats, for the marking and toileting distinction. Published litter box preference studies, for the covered and uncovered figures and the box size figures.