Hi, I have a son who just turned 2, and a newborn daughter. All summer, my son has been giving me a hard time and I don't know what to do. If I turn my back for a second, he's starts climbing on things that is just not acceptable (dining room tables, etc), and I can't seem to get him to stop doing it. This started before the birth of my daughter, but it's even worse now. I try taking him off and telling him that it's not okay (I really hate telling him NO alot, so I reserve it for the 'you're going to hurt yourself' type situations). But he just keeps at it. He's fallen off before, when I haven't gotten there in time, etc, and I don't want him to get hurt. He just doesn't listen to me, and sometimes I get really frustrated and yell, which I hate doing, and I know doesn't help the situation at all. How can I get him to stop climbing on dangerous things?