This is a specific conversation about Cat litter boxes — size, type, and placement — ask about yours and get one honest answer for your exact situation.
inparticular.ai
A narrowboat bathroom is about as space-constrained as it gets, so I understand the puzzle here. Before we get into solutions, worth knowing upfront: most litter boxes are already too small for cats — they need a tray at least 1.5 times their body length to feel comfortable — and covered boxes, though they seem like the tidy option in a small space, are often rejected by cats who feel trapped inside them. A low-sided open tray is almost always the better call. So: how many cats do you have on board, roughly how big are they, and are there any current litter issues I should know about — avoidance, mess over the sides, anything like that?
Just one cat, she's a medium-sized moggy, maybe 4kg. The bathroom is tiny — I'm talking maybe 60cm wide. She's been going outside the tray a bit which I think is because the current box barely fits and she has to crouch weirdly to use it.
inparticular.ai
That makes complete sense — if she's having to contort herself, she'll start stepping out or avoiding it altogether. The good news is that going outside the tray usually stops immediately once she has a tray she can actually turn around in. The challenge is finding something long enough for a 4kg cat without eating your entire floor space. What are the usable dimensions where the tray currently sits — length and width? Even an approximate is helpful.
It's kind of a corridor to the toilet, maybe 55cm long and 40cm wide at most. I could potentially put it under the sink if the tray is low enough.
inparticular.ai
Perfect — under the sink is a smart use of dead space and cats actually like the slight enclosure on three sides without feeling fully boxed in. For a 4kg cat you're looking for a tray around 50–55cm long, which is right at the edge of what fits your space but doable. My recommendation is the Savic Nestor Classic open litter tray in the large size — it's 56cm long, 39cm wide, and only about 14cm tall, so it will slide under a standard narrowboat sink without issue. The low sides mean easy entry, and there are no corners or steps for litter to collect against. It's plain, it's practical, it's easy to lift out and rinse in a small space. No hood, no gimmicks. Given that she's already been going outside the current tray, I'd also suggest a small rubber-backed mat just in front — it catches scatter without adding bulk.
That sounds ideal actually. Is there anything special about managing litter on a boat — like movement affecting it, or smells in a small enclosed space?
inparticular.ai
Good questions both. Movement isn't a major issue — cats are sensible about it and will wait for a calm moment, and litter doesn't slosh like water. For smell in an enclosed cabin, the single biggest thing is scooping daily without fail; in a small space odour builds faster than in a house. Use a clumping litter rather than clay or wood pellets — it locks smell at source and you remove less total volume each scoop. Breeder Celect paper pellets are popular on boats because they're low dust (important in a small enclosed space) and lightweight to carry on and off. Avoid anything heavily perfumed — it just layers smells rather than eliminating them, and in a narrowboat that can become overpowering quickly.
Really helpful, thank you. I'll go for the Savic Nestor and try the paper pellets.
inparticular.ai
That combination should sort it. Once she has room to turn properly you'll likely see the outside-the-tray behaviour stop within a few days. If she still seems reluctant after a week, try moving the tray slightly so it faces the corridor rather than sitting flush against the wall — giving her a clear exit line makes a real difference to cats who've learned to feel crowded. Good luck with it.
