23 month old son was easily potty trained with N75. Used bell and gate in beginning but son quickly figured out what to do. No accidents for almost 6 weeks. We have now had 3 accidents in 2 days. Obviously these are "on purposes", not accidents as my son clearly knows the expectation. I sternly reprimanded him for his on purposes and had him help clean up. What other consequences should I employ if this problem keeps up? I want to nip this in the bud now. Thanks!