That's when my "smart-ass-mouth" would have been used...

"Adelaide, I have to tell you, some days when I come here, your house smells like poo."

"well, YOUR kid is here....all day long!!" smile smile

5min before 1st parents are to arrive I light a oil candle by the entrance just in case but in any case, that's just rude! Considering I'm changing their kids smelly "POO" (eyeroll)