Also my daughter LOVES frozen blueberries. She hates fresh blueberries. But lots of toddlers with PICA love love love frozen hard foods, like frozen peaches, strawberries. Its what our therapist recommended and it works.

Just had to come back and say something else i remembered that replaces my daughters urge to dirt.
Organic Raw Pecans. They are gritty and kind of taste like dirt. You can grind them finely or give them in pieces (or whole dependent upon age). Almonds too. They are very earthy tasting and she loves them too.

Try some fodds that copy that texture like choc pudding with choc oero ground up in it , gummy worms spaghetti - the long noddles, Try foods with alot of different textures.

mommx3 I will try some of that. I know he will eat ice chips all day long. And thank you WandAJ.

This is so he can safely explore foods and get the input he needs without eating grass and objects. And moderation is key. Obviously you wouldn't want him eating raw rice or ice chips all the time. But it will offer an outlet. Also give it or on a tray with two owls and a spoon for a scooping and pouring activity. For some reason if they think they shouldn't eat it they want to :)