This sounds terribly rude (I promise I'm not being!
) but if you put your shoes away, in a cupboard or somewhere up higher - does he still pee where they would have been?
When Harry was tiny, he had a thing about leather shoes - either biting the straps or attempting to lift his leg against one (One sharp 'NO' and he never did it again...).
When we go to my mum's house, he's still always fascinated by her shoes - now he just tries desperately to lick them....I think he's addicted to her polish
Funny little things! Sally + Harry x