It's a constant flash point here. They're 5.5 and 2.9 y.o.
Incentives (5 mins tidy then a big cuddle / piece of food / whatever) work for a day or two, then DS1 refuses to do any tidying at all unless I provide an incentive.
"If it's still on the floor it goes in the bin" doesn't work as DS1 puts away the things he most likes then ignores the rest. If I remove the things he most likes, he either goes mental or decides he didn't want them anyway. DS2 gets so upset about toys being confiscated he is pretty much unable to do any further tidying - or he starts grabbing DS1's toys and pre-emptively putting them all in the bin, and I have to rescue them.
I can do it with them and make it into a game but it takes AGES and I've never got to the point where they'll get on with it more without my constant participation. DS2 still just wants to play with everything even with me there.
We have a pretty straightforward storage system (Duplo box, train box, everything else box, bookcase) so I don't think that's the problem.
Any tips?