Senior dog overnight accidents: what works

Sudden overnight accidents in a dog who's been perfectly house-trained for years is almost always a sign that something physical is going on — at 14, Cavaliers commonly develop urinary incontinence, kidney changes, or early cognitive decline that affects their ability to hold through the night. That said, the cleaning still matters: the only products that permanently eliminate pet urine odour are enzyme-based cleaners — anything else just masks the smell, and your dog will keep returning to the same spots. Before I point you to the right product, can you tell me: is this on carpet, a hard floor, or bedding? And are the stains mostly fresh by the time you find them in the morning, or have some been soaking in for a while?

Right, so you're dealing with set-in urine on carpet — that means the liquid has already wicked down past the fibres into the backing and possibly the underlay. A surface spray won't reach it. You need a product you can pour on generously, work into the pile, and let dwell long enough for the enzymes to break down the uric acid crystals that are locked in there. What's your dog's name, and has the vet looked at him yet? The cleaning answer is straightforward, but if this started suddenly I'd want to make sure you're not just managing the symptom.

Good — really glad the vet appointment is booked. For Biscuit's overnight accidents on carpet, the product I'd go straight to is Bodhi & Friends Enzyme Cleaner. It's a proper bio-enzymatic formula, not just a scented neutraliser, and it's strong enough to handle the volume of urine a dog produces overnight. The key with set-in stains on carpet is to saturate the area — you need to get the product as deep as the urine went, so don't be stingy with it. Pour it on, press it into the pile with a cloth, then leave it for at least 10 to 15 minutes before blotting. Don't scrub, and don't use any steam cleaner over it afterwards — heat sets the proteins and makes the smell worse. One treatment usually handles fresh accidents; set-in ones that are weeks old might need a second pass.

Absolutely — a washable waterproof mat or puppy pad in the hallway will save your carpet while you're waiting on the diagnosis. Some people use a waterproof-backed runner over the problem area. It won't stop Biscuit going there, but it means the urine sits on something you can wash rather than soaking into your carpet again. Once the vet has a plan — whether that's incontinence medication, a late-night toilet trip before bed, or something else — you can reassess whether you need it long-term. The Bodhi & Friends cleaner will work on the existing staining and reset the smell so Biscuit isn't being drawn back to the same patch.

Good plan. One last tip: once you've cleaned the area and it's dried completely, give it a sniff at floor level — that's roughly what Biscuit can smell. If there's still any trace, do a second application. Dogs can detect residual uric acid at concentrations we can't, which is why they keep going back. Hope the vet appointment goes well and Biscuit gets sorted quickly — at 14, these things are usually very manageable once you know what's causing it.