Thankyou for all your help everybody.
We've since been out and bought just about every product going and also added an extra litter tray which seems to have sorted the problem (so far so good anyway!) The urine-off spray is really good - can squirt it on a wee stain and it goes!
Hopefully he can be a good boy now - i'll have to try speaking to him in spanish maybe he will listen for once!
p.s. thanks for the picnic rug tip, i was going to try bin liners but thought that would be a bit weird!
thanks again everyone i will keep u updated!

Fingers firmly crossed here that everything is sorted. It would be awful to have to rehome him after all you have been through together.

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I'm new to these forums, but I wanted to jump in here real quick, in case your kitty decides to resort to his old ways...

As far as the carpet issue goes, is he urinating or defecating? If it is urine, you can get the smell out of the carpet by mixing 8 oz hydrogen peroxide, 1 tsp baking soda, and 1/2 tsp lemon scented dishwashing soap. Cat urine is one of the most difficult and nasty smells to try to get rid of, and when I tried this mixture, I was skeptical. But it worked! I poured it on the carpet, scrubbed the area real well, and within a days time, the smell was gone!

Also, just something to keep in mind in case it is ever needed...
You CAN purchase pet diapers for him to wear... They are made for handicapped pets, but I keep some on hand, *just in case*.

Best of luck to you.

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.Many Paws.