This one is for me! The busier you are, the more irritated you can get with those around you, right? So, SLOW down! Pick a time of day /week that you will spend with your young ones and HELP them clean their room. I'm talking for a few years, probably. When Mommy or Daddy stays at their side, they enjoy it, feel safe, and learn where things belong and they will eventually find it not 'tooooo hard!!!!!!!!'. De-stress your life! Laugh.Have fun! (I have accum. 9 kids of experience. Trust me.)
I have wasted a lot of breath and energy on being irritated about messy bedrooms. There is nothing more important than relationships and complaining does not BUILD them. Sweeten up your life and help those kiddos out.! They will always remember what a pleasant time 'clean up' was in their home.