HELP!!!!!

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So my son has had a growing obsession with cords plugs and outlets. EXTREMELY dangerous obviously.

He gets into a lot but this is the biggest problem.

Idk what else to do. I try diversion firmly saying no and literally the second I sit him down he goes straight back to it. Literally hundreds of times a day. I cant do anything unless I contain him somehow. This has been going on for weeks and I'm about to scream. Any advice would be appreciated