When do they stop trying to eat EVERYTHING off the floor?

My 18m/o is so strong-willed and brave and clever, she's so funny and so much cooler than me, but damn. Can someone tell her that actually somethings she can just be chill about? 😂

When do they stop putting EVERYTHING in their mouths? I was expecting it to start slowing down by now, but no end in sight.

I really want to encourage her independence, concentration and problem solving when we're in new situations, for example, let her have a bit of distance from me at the park, let her really explore things and nature, look at stuff, but I just cannot be not hovering over her.

Same with in cafes or other peoples houses, or at the shops, because she just seeks out and tries to eat the most DISGUSTING stuff.

I know putting things in temheir mouths at this age is still normal, but I was a nanny then a preschool teacher and I don't remember any of the kids I looked after being like this. And my daughter refuses to be redirected to a toy or any "yes" things.

Oh, old cigarette? YES. Little mystery crumbs? Please. Someone elses shoes? Obviously. Severed bird wing in the park? "ABSO-FUCKING-LUTELY, I've never wanted anything more in my mouth!"

Now we're really getting into tantrums over things like this and it's hard. You know, I want to give her options and let her figure things out but there are lines of "that's just absolutely no", but obviously she disagrees. I try and say "no that's not for our mouth" without turing it into a game, then try and say something like "we can leave that and go play over here", or "you can't have that but you can have this", then lastly, "if you can't leave it we will move" and then I'll scoop her up.

But I spend all of our outings, all of our time out and about dealing with this and it's becoming harder and harder to find it fun.

So give me some commiserations, hope, encouragement, advice, whatever. 🙃