I think they should offer and try to make some kind of dent in the mess... but personally, i am a bit of a freak when it comes to sorting out DS's toys, so i would kind of actually rather do all the cleaning and sorting myself lol. Even if someone offered to help clean up i would either be a nazi and follow them telling exactly where each toy and bits peices go or i would smile and nod and as soon as they left i would re do it all anyway (which would be more work for me coz i would have to find all the bits to all the toys!! lol)

The offer is always nice though- and i would never refuse an offer for dishes (although i have a dishwasher now.. and yep- self confessed anal freak when it comes to packing and that too)

I think next time your at someone elses house, make a big thing about offering to help pack up and see how it goes- start up the clean up tradition and get everyone involved... on the other hand-if people run for the hills as soon as you mention helping.. it might be time to find new mums to hangout with!!