Usually when I clean a pony with glitter symbols, I very gently brush over the body with a toothbrush and Dawn dish soap. This isn't fool proof though, since so very often the body stains won't come off, and I'm afraid to scrub any harder thanks to the glitter. Unfortunately, I don't really think there's much that we can do when it comes to cleaning glitter ponies, because it's very difficult to clean around the glitter. :/ I'm still going to be stalking this thread though to see if anyone has any other ideas or techniques. As for now though, I would recommend just giving their bodies a light, light scrub.