I don't know what you have actually tried. I found that keeping chew toys available everywhere helps my sons pica. Sensory Integration Therapy helps a great deal with moods, aggression, ability to focus, etc.

sensory integration therapy sounds very interesting . I may have to try that for my Daughter and her sensory issues with Pica.

My son had Pica and needed iron.

We have tried leaving chew toys, but he will go to feces, Wall plaster (has made holes in walls and chews the Jiprock (hope I spelled it right). He pulls out the carpeting and eats it. His boxspring and mattress have to be on floor because he chewed all the underneath...Blankets, comforters clothes, sand, rocks, pillows, chairs etc....have all been ingested...Boxing gloves on his hands have been tried....Special Diets have been tried but to no avail...Behavior modifications programs have been tried. We adopted a little guy and if our 7 year old sees pull-ups soiled or not he will ingest them...Numerous meds and antipsychotics have been tried to help with all the behaviors again to noavail...He also night walks all night...he cannot relax to sleep.....Stuffy toys cannot be allowed in his room, because he will eat them. He will ingest anything and everything that can be found....

wow, see with my son i cant get a ounce of weight on him, hes go go go all day he burns off the little bit he eats, hes over 3 feet tall, but only weigh 27 #s, real tall n leggy kid, no waist either .