5 things that help a rabbit that sprays urine and marks

Neutering removes the hormonal drive behind almost all territorial spraying, so no amount of tray-shuffling or extra cleaning will out-compete hormones that are still fully switched on. It doesn't stop overnight, though — Walnut, my neutered buck, sprayed the same stretch of hallway skirting board every evening around six for about a month after his op before it properly stopped, so don't call the surgery a failure in week two, that's just the wind-down. And it's not only bucks: does spray too, especially in a bonded pair working through a dominance dispute, so if you've got two rabbits, both get done — not just the one you caught in the act.

An enzymatic cleaner breaks down the actual proteins in rabbit urine, which is the only thing that stops him reading an old spray site as unclaimed and worth topping up — everyday cleaning leaves the smell fully intact to a nose built for exactly this. Skip anything ammonia-based in particular: to a rabbit's nose it can smell close enough to urine that it actually invites a fresh mark rather than putting him off. This is the step people skip because the spot looks and smells clean to a human, then wonder why the same corner gets hit again a week later.

Spraying is a standing, tail-up, backward squirt aimed at a vertical surface — a deliberate signal, not a toileting accident — so a spotless central litter tray does nothing for it if you haven't worked out where he's actually defending. He's not asking for somewhere to go, he's marking a boundary: the doorway, the corner by the sofa, the exact line between 'his' room and the rest of the house. Once you can read the stance, you stop buying extra trays for a behaviour that was never about toileting, and put one big enough right on the spot he's actually guarding.

Marking almost always spikes because of one identifiable change to the scent-map of his space, and it won't stop until that trigger is dealt with, however good your cleaning routine is. The classic under-the-radar one is a mirror or a glass patio door: he sees a 'stranger' sitting in his territory and marks accordingly, and most owners never clock the glass as the cause. It's the same instinct behind a friend's dog's scent on your jeans, a new pet's cage, or a rearranged sofa — nothing personal, just a boundary that suddenly feels contested.

A rabbit with one secure, uncontested core territory — a box or covered hide where his own scent is allowed to build up undisturbed — generally has less urge to mark everywhere else, so a confidently-scented home base does real work even though it sounds backwards. This matters most during adolescence, roughly three to six months old, when marking peaks and the hormones haven't settled yet — and scolding, chasing or scruffing him mid-spray only raises his stress, and a stressed rabbit marks more, not less. Track frequency loosely on a calendar instead of reacting to any one bad day, so you can actually see the trend easing as the hormones, and the neuter, do their work.