I wanted to use these instead of pull ups. They work well, just know accidents will happen. My daughter is actually starting a little earlier than some at 18 months. We have had plenty of accidents so far; however, she knows when she is going and that is worth it's weight in gold. After a week we are staring to see some success. You could put a plastic pants on her but I made sure to buy plenty and since we are starting a little early it doesn't bother me to slack off when tensions get high. We are very pleased with them.