I ask questions / get to know parents-homeowners where my kids may spend time, I guess I wouldn't explicitly call out guns as the first thing on my list of concerns (being a murderer-rapist/defiler of pets are higher on my list right out of the gate) but if I get on to the topic of shooting and they indicate there are guns in the house I would broach the subject while offering an explanation of how I have approached the same in my home.
I changed my gun storage methods when I had kids and have educated and tested/reinforced with mine what to do in someone else's house if they find a firearm. I also offer to take other parents and their kids to the range to show them firearm/safe handling basics when the opportunity comes up.
I am fine with the concept of reminding parents about the safety of their kids (when they are not texting/on the phone and driving with 3 kids in the back seat) but I find the "ASK" focus on guns overly narrow given the other more statistically significant dangers to kids in most households... Remember people, half the population will always be "below average" and need lots of reminders (ever been in line at the Post Office?)...
