We have a whole host of new neighbors at once, all of whom have children

The next door neighbors and the ones next to them have kids around 4 - 7, and those kids keep climbing from one kid's deck into the other kid's backyard over the fence. Their parents are not watching when they do this, and... like, on the one hand I'm reasonably sure that the worst that'll happen is a skinned knee or, if they're very clumsy and unlucky, a twisted ankle. On the other hand, I'm also sure that most parents of small children have a much more intense view of risk assessment than I do. I'm trying to work out how to phrase "I don't think this is a big deal, but if you do then I think you ought to know what's going on, but if you don't care I sure don't".

(This is definitely one of those things you'd never dream your kids would think of doing until you see them doing it, lol!)

They're sweet kids, though, and told me that they like the flowers in the garden. They're not the only ones! We have so many bumblebees and lightning bugs this year! And also that invasive bug that's everywhere now, blech.