This is a strange one. Ds, who is severely autistic, has for some time had an obsession with removing objects, furnishings and putting them in the bin or removing them and hiding in odd places before getting rid of them. He has done this with photos, clocks and even DVD players, small tv's whatever. This has been awful to live with and I have ended up getting rid of most movable things or locking up rooms to prevent him from getting hold of things. He has unfortunately moved onto his sister's room and is slowly but surely removing her toys and books. She is also autistic and can't stop him. I can't lock her room because she needs access to it as she likes to play in there. I am at my wits end frankly. If I attempt to stop him, he will be physical with me and will go into meltdown, screaming, banging on doors, trying to bite me etc. even if I stop him for a short while, he will go back to it, sometimes getting up early or in the middle of the night to get the object he wanted to remove. I do not know what to do anymore. Seeing my daughter's toys being removed is heart breaking and her room is becoming bare. What do I do?