Thanks Tan

I also find using appropriate facial expressions helps convey the message - i never raise my voice or use a negative tone because i don't see it as misbehaviour - just discovering and learning and i dont' want to squash that drive to experience.

So if he's trying to get something and makes a mess or spill, i just say Uhoh in a really animated way and pull a face to display yuckiness and then explain that we should leave the yoghurt on the bench because if it falls down its very yucky to clean up - if the spill has happened, get her involved in the clean up with some paper towels, i did this from a young age and whenever something spills my DS is the first to pick it up and try to help.