My dd is 6 and still hates the self flushing toilets because they are so loud. When she was 4 and we were at WDW, she was so afraid of them that she could not go. Even if I covered the sensor, she was so afraid it would flush, that she could not go. She actually wet her pants at DTD. On the day we were leaving, we had already left the resort and were just heading to the airport. She had to use the bathroom, so I figured we would stop at Walmart rather than on Disney property...you guessed it, self flushers there also.