Carpet pong blues!

This happened in a house we bought years ago.
After shampooing, the carpets smelt of damp dog or urine.

We had to rip them out and replace, sorry.

I had a similar problem years ago.
The cat spray had impregnated the underlay and floorboards.
It took an industrial cleaner and new carpets.

Years ago when we moved there was a urine smell in the downstairs toilet.
I took up the lino and found the floor boards were wet and very smelly.
Gave the floor a good scrub with bleach let it dry for some days and the smell went.
No problem after that.

You don't have to spend a fortune for a new carpet. They are reasonable to buy. However,I've just changed from carpet to laminate in 2 rooms..Easy to clean and no stale smell .

If it is cat wee it will be almost impossible to get rid of and new carpets are the only solutions.

Could the underlay have got wet supernannyjane? If so it does smell and could just take time to dry out. I agree, bicarb is helpful. Sprinkle it on and/or leave some in shallow containers around the room. I also understand dilute white vinegar used in the carpet washer can help. If you’ve access to a dehumidifier I think I’d put that in the room and see how much water it removes, the smell may go with it. Don’t despair, it may just need time,

Use some odour eliminator in with the shampoo. You can buy a 5 ltr bottle for about 15 quid on amazon.

Do the Shake and Vac?

I'm inclined to agree with aggie. A new carpet might be the answer. I think that's what I'd save up for.

Oh, bit of a tough one!

Possibly get a professional firm in? Realise it might not be cheap, but perhaps get them to come and take a look (and a sniff) before actually commissioning the work?

Have you let it dry completely ? You could try bicab sprinkled on and left as long as possible then vacuumed , but it sounds as if it is beyond help