By the time my third child was about 2-1/2, she started showing some definite interest in the potty. After all, that’s where all the big people go to do their business, and none of us wear those diaper things. I had already potty-trained my two older kids, fairly easily, I might add, so off to Target we went to get the necessary supplies. We got a pink plastic potty and a large tarp to cover the carpet in the living room for a few days.