cleaning a wee'd on futon?

[basildonbond]

dd's friend stayed over last night and despite being reminded about the loo before they went to bed, unfortunately wet the bed - it's a roll-up futon and I'm wondering what the best way to clean it is - any ideas?

would be very hard to clean i'd imagine

that's what I feared ....

it's sitting in the garden at the moment airing off and I'm praying for no rain

not sure it'll ever be the same again though!