I know this is an odd question, but I have searched all over the internet and can't come up with a solution or at least one to meet what I am looking for.... What can you use to clean a Durapella sofa???

My dog knocked over a Mountain Dew can that was half full all over our Durapella sofa and left some nice size stains. Most of the sites said to clean with a little soap and water (tried that didn't work very well). Any help from ya'll would be greatly appreciated by me, my s/o, and the dog who as of right now is in the "dog house".