This isn’t a toy or storage problem. He’s going off when there’s a toy box in the room.
itsnotmessy. You HAVE to prioritise your children’s MH. They are your responsibility & how you handle this will affect all of their lives, for all of their lives.
I would tell him that I will fully support any help he gets & attend any sessions that will help. HOWEVER, if he throws anything out or takes it to charity our marriage is over. No more chances. IF he refuses to get help, then our marriage is over. He is in real danger of doing serious damage to your children.
Have you ever watched ‘Hoarders’? The vast majority with issues like that have had a parent like your DH. One who takes their things and gives them away or destroys them.
Your children can’t grow up not knowing if their things are going to vanish while they’re at school.
Then there’s the shouting & not being able to play properly in their own home. It’s not fair on them.
I, personally, don’t think it would be a bad thing for any of you if you were to separate. You and the children could live in a happier, more relaxed environment and he could have a far better relationship with them if he’s picking them up and taking them out or if they are just visiting his place with minimal stuff.
I am very sympathetic with anyone with MH issues and believe we are all only one trauma away from being there ourselves. However, the children have to come first and when there’s a solution that minimises the impact on THEIR MH then it needs to be taken.