Bulldog drool stains on memory foam bed

Bulldog skin fold drool on a memory foam bed is a particularly stubborn problem — the saliva soaks deep into the foam and the bacteria in it are what's driving that persistent sour smell. The only products that permanently eliminate pet odours are enzyme-based cleaners. Anything else — sprays, baking soda, scented products — just masks the smell, and your dog will keep returning to the same spot because their nose can still find it. Before I point you at something specific, a couple of quick questions: how long has the smell been building up, and do you remove the cover to wash it separately, or is the foam itself exposed?

That's useful — two or three months of saliva soaking into foam means the bacterial load is well established, so you need something that can penetrate and dwell, not just a surface spray. With memory foam you also have to be careful not to oversaturate it, because it holds moisture and that creates a mould risk if it doesn't dry out properly. Are you able to take the foam outside or somewhere with good airflow to treat and dry it?

Perfect — outside treatment is exactly right. For this situation I'd go with Bio One Pet Odour Eliminator. It's a concentrated enzyme and bacterial formula, widely available on Amazon UK, and it's specifically designed to break down the proteins in saliva and urine rather than just fragrance over them. For your foam bed, spray it generously into the stained areas, press down gently with a cloth so it gets a centimetre or two into the foam rather than just sitting on the surface, and then leave it somewhere with airflow for several hours — ideally a full day. Don't rinse it out; the enzymes need time to work and rinsing stops the process. For a set-in smell this strong, one treatment may not be enough — do it twice with a day between, and you should find the smell is genuinely gone rather than temporarily covered.

The washing machine alone won't reliably kill the odour-causing bacteria — detergent cleans but doesn't enzymatically break down the proteins the way Bio One does. Spray the inside of the cover with the same product before you put it in the wash, let it sit for fifteen minutes, then machine wash as normal. That way you're treating both the source in the foam and the cover simultaneously, and you're not putting a clean cover back onto a still-smelly base.

With a Bulldog, a light spray of diluted Bio One on the foam every couple of weeks — before any smell builds — keeps the bacterial levels low enough that it never gets entrenched again. Also worth wiping your dog's skin folds with a dry cloth daily if you're not already; that reduces the volume of bacteria-laden moisture going onto the bed in the first place. Some Bulldog owners use a waterproof mattress protector under the removable cover as well, which stops anything penetrating the foam at all and makes the whole thing much easier to manage.