If you get chocolate ice cream on a couch or other upholstery you should wipe up the chocolate ice cream right away and then dab up the rest.
Then use an upholstery cleaning machine with some vinegar and pour some hydrogen peroxide onto the ice cream stain on the couch.
Allow it to sit for a few minutes and then go over the ice cream stain with the upholstery cleaning machine to such the ice cream out of the upholstery.
You can also soak the area and use a shop vac to help suck out the ice cream but an upholstery cleaning machine works the best.
If the chocolate ice cream or any other ice cream has set in you may need to you may need to resort to hydrogen peroxide and ammonia.
Apply the peroxide with an eye dropper, and then tamp the chocolate ice cream stain.
After that apply the ammonia with an eye dropper and tamp again and then Flush with water and blot until the liquid is absorbed.
This works when you get chocolate ice cream and any other ice cream on carpets as well.
A good carpet cleaning machine and upholstery cleaning machine is a great investment and I would not be without both mine now.