Hunt at Hidden Valley

I have just taken my sons new outfit out of the washing machine only to notice it has bean juice all down the front of it, I am furious as he wore it to his Nana's the other day and even though I told her to make sure no stains got on it she ignored me and let him feed himself without a bib or without taking his top off first (I swear she does it on purpose!!). So now I am stuck in with two children about to go to bed, FH at work and no stain remover and this stain will set before long, what do I do? What can I use to get it out? I don't have much in the house either really, any tips would be great, thanks!