How do I stop my dog marking in a new house?

A new house is, from a dog's perspective, an entirely unclaimed territory covered in unfamiliar scents, including possibly a previous pet's, and marking is a natural if inconvenient way of establishing ownership over that space. This is especially common in unneutered males but can happen in spayed females and neutered males too, particularly in a multi-dog household.

Standard cleaning products can actually mask urine to human noses while leaving enough scent behind for a dog to detect and remark, so use a specifically enzymatic cleaner that breaks down the compounds fully. Treat every marked spot the same way, even ones that seem minor, since inconsistent cleaning is one of the most common reasons marking persists for months instead of days.

Keep your dog on a lead indoors or under close supervision for the first one to two weeks in each new room, watching for the sniffing and circling that typically precede marking, and interrupt calmly before it happens rather than only reacting afterward. A consistent, frequent toilet schedule outdoors also reduces the urge to mark indoors.

If marking continues beyond three to four weeks of consistent management, or if it appears alongside other new behaviors like increased urgency or frequency, a vet visit is worth ruling out a urinary issue before treating it purely as territorial. Persistent marking despite management can also benefit from a session with a trainer familiar with house training adult dogs.