Cloth interior HELP

My two sons have made a complete mess over the rear dark blue cloth seats of my A4 Can someone recommend a tried and trusted product to get these stains out and indeed how I go about doing this.. Or is it better to just take it to a professional if so can someone recommend on in the Manchester Area?

Thanks

Thanks for the quick reply - it looks like they have spilt something there is a large patch in the middle of the seats with a dark ring round it in addtion I must admit that when I bought the car I should have covered the seats knowing that my 2 kids play a lot of football all over the country and arent exactly the cleanest even when they have a change of clothing.. in general it seats are covered in worn in grime for want of a better word.. as for location based in the NE side of Manchester nr Oldham..

I have tried the generic stuff like Halfords etc < yeah I know but to be honest its made it no difference. I have also got a little hand held vax like machine but dont want to use that in case it just sinks the dirt into the actual cloth..