First I would try the Feliway Plug In...it is a calming agent for the cats. I ordered mine from here..
http://www.drsfostersmith.com/

Second I would also recommend free feeding them the dry cat food. This way Tito would always have something to nibble on when he is hungry and would probally stop pestering you.

The last thing I would recommend is to kennel Tito at night. It is not inhumane to do this. Put a small litter box, some water and something soft for him to sleep on.

Keep us posted.