DD is 17 months definitely starting to test my limits these past weeks, with some hitting, pushing, food throwing, and tantrums. I'm kind of at a loss of what to do when she starts acting out. I try calmly explaining to her why we don't hit, throw food, play with breakable things, etc. but half the time I feel like she's not even listening or taking in what I'm saying.

If you do time outs, what age did you start?