Just witnessed a 3.5 yr old peeing on the soft tarmac next to play equipment. The playground is in a large park with plenty of places around the edge to pee. Or they could have walked 100 yds down a traffic free path to use the toilets in the library. Or walk 150 yds to pee in their own house. Am now watching younger sibling crawl near where the older one peed. Ugh.