My LO put everything her mouth and i can't get her to stop. Sometimes, she threw her milk out, after putting stuffs into her mouth. How to stop her from doing this?

Babies putting things in their mouths is not only normal, but also signifies a burgeoning interest in the world around them. In their first year, babies are curious and explore their surroundings through their senses -- seeing, touching, hearing, smelling, and tasting. Putting things into their mouths is a byproduct of this development. Baby proofing the house is important to ensure that baby don't put things that can cause him to choke or get sick. I find that scrunching my face and going "ewwww" or "noooo" whenever small kids put random things in their mouth does help in deterrence to a small extent. Maybe you can consider that?