DS has just spent an hour screaming like a banshee at being asked to put every pillow in the house back where it belongs. He was quite capable of getting them all out (6 big sofa cushions, 8 smaller sofa cushions, 12 bed pillows) was warned when getting them out that he would need to put them back. He has screamed that he has hurt his neck, broken his finger, hurt his bottom, is hungry, needs to go to the toilet (I let him do this btw), is thirsty, they are too heavy, I have to help him, it is not fair, why do I treat him like this etc, etc, etc. I did fold up the ten blankets he had also dragged out but flat refused to do the pillows.
So how old before you instigated the you made the mess, you clean it up rather than helping them do it.
I think btw I was being perfectly reasonable about the pillows (maybe a bit unreasonable about giving him two marks on his tv chart (worth 15min tv each so he has lost 1/2 his tv for tomorrow) for 1 shouting at me and 1 for not doing the pillows after the 3rd request.)