Advice on 19 month old.?

h sounds alot like my son. my son is 15 mo old and likes to push all the buttons he can. it is getting al little better now that i have started to yell at hom for doing bad and if he continues he gets his hand slapped and put in a play pen wit nothing for a time out he is almost a year and a half so i give him a min and a half.. they always listen better at daycare i am not sure why but in there mind i think they are thinking what can i get away wit today with mom and dad. u have to show hom who is boss. my son is spoiled so it is hard but it will get better eventually