Thanks for concern, appreciated. He has scratching post (well two) and furiously scratching them. But chair is chair, you know, forbidden fruit. Vomit is not that often or shitting, pissing is where I've got problem to solve. I've consult animal behaviorist which is also vet in clinic we're going, and she said that if cat gets neutered after adolescence it might become habit to mark territory either way. Plus he might got into concept that since in shelter everything is "toilet" then why not at my place. Well, we'll see, so far Mattias is winning pissing contest :)