Sorry if this sounds dumb but I've always lived in houses with blinds. Now we've just moved to a house with curtains but they're a bit grubby.
I'm sorry I have no idea what they're made from curtain material 
Can I shove them in the machine on a cool wash? Will they be ok or will they shrink and look ridiculous? Do I need to remove all of the hooks from them before I machine wash them?
I thought this lovely sunny weather would be a good opportunity to get them washed.
Any thoughts please