I have a 9 week old puppy, he is great at going to the toilet outside at home. When visiting my parents he has started to go to the toilet inside, always in the same spot. They also have a dog, I have been keeping him outside at their house as they have just got new carpet but as soon as he is in, he pees on it much to our delight. I have been telling him no and putting him outside as soon as he has done it but it doesn't seem to help. Does anyone have any advice? Please help!

Deodorize that section of carpet. I suspect the other dog has marked that spot and pup is going where the other one went.

I'm fond of the Febreze products, but Resolve seems to do well at removing odors so the dogs cannot smell them.

To add to Cats post at 9 weeks it's hard to expect him not to go wherever he wants in a house he is only visiting.

Is he perfectly trained at home? I don't think so, he would still have accidents.

Don't expect too much at such a young age.