Or do you ignore?
I have ds2 18 months and ds1 7, both copy each other and I'm a screeching banshee with both boys running in opposite directions, on their own they're fab together it's getting out of hand, mostly it's the youngest who li keys screeching, or throwing toys food everything, and that's when he's not busy climbing on everything including the table, pretty much all the blinds have been broken by him. He's a very kind sweet boy, as is my eldest, however the eldest is going through the not listening aggravating his brother laughing at things he's doing wrong. And both see fit to laugh at me unless I shout, which tbh I feel like I'm constantly doing. I get down on their levels and talk to them, the eldest looses things ie tv his music his ds etc, but obvious,y the youngest is too young for that.
Distraction doesn't really work, when I hold him to me and make him look at me when being told what to do he gets screechy and fights to be let go, he's rather strong willed and independent. I seem to have forgotten everything that I did with ds1 at this age, as he was fine, and we didn't really have any problems from him until ds2 came along and got more mobile.