I really like this show, but this is one of those episodes where I can't STAND how Sheldon gets away with everything... His mother chased him all around the garage? I'm sorry, but if it were me I would have went and grabbed some boxes and or bags and all those trains that he loves so much would have been wiped off into them. The plastic would have been torn down right away. And if possible water and power would have been shut off to that garage. He is not a five year, he is too old to be acting like that. I mean, in the next episode they are home alone for the first time. He gets away with way too much in this show...
