Boring household question

[dizzydo]

I have some lovely wicker baskets which have been on the top of my kitchen cupboards for a good few years. I took them down the other day and they are really greasy and dusty. Any ideas on how to clean them without spoiling them. i did think about putting them in the bath and showering them with warm water but not sure if that will cause them to split.
TIA

I googled - but am supposed to be working! It's Friday after all.
\link{http://wickerwoman.com/basketcare.html\here}

Brilliant! Thanks swedishmum, why didnt I think of that

i didnt realise baskets were so much hard work