Keep a dirty house!

[Ghoulish Delight]

Everyone draws the line differently. To my mind, it all about what would I consider a "normal" amount of germ interaction, whether it's an adult or a child.

I probably would be pretty vigilant about things like restaurant tables, either wiping them down or bringing a place mat for my kid, because the kid will be putting their food on there, and sticking their hands in their mouth more than normal because they're eating and an < 2 year old kid sticks their hand in their mouth to eat. With a shopping cart, I might go so far as to wipe the handle down, but otherwise, I don't really care if they're just generally touching it, though I'd try to make sure they weren't using it as a teething toy option.