T.A.
I have 4 children and my best advice for you is "wait until the child is ready" I tried everything under the sun to get my oldest child, who is now 12, to use the potty. She wasn't ready and all the accidents were stressing for both of us. I eventually bought her pull ups and when she was ready she let me know. The same was true with the other 3. I never used the potty chairs instead I used the snap on seats that you put right on the regular toilet seat, that way they felt like big boys and girls.