I wouldn't say that he was really good at cleaning, unless you count overspraying cleaner on vertical surfaces good at cleaning. But it was nice that he wanted to help. 
Last week his teacher complimented Dave in front of Nico about how good of a leader Nico is. Apparently, they all have these little chores at school... from what I can gather, he seems to be something of a boss- prompting other kids to do their jobs and having the other kids report back. So basically my kid is destined for civil service? In any case, when he heard his teacher tell Dave how good he is at this job, Nico was BEAMING. Which makes me happy.
