Try these steps, but make sure you test it on a hidden area first to make sure the carpet won't get messed up. 1)Remove as much juice as possible by blotting (not rubbing) with a clean white cloth. Work from the outside to the center of the stain to prevent it from spreading. 2)Lay a cloth moistened with cleaning solution on top of the stain. These four cleaning solutions should be safe for most carpet types: -1 teaspoon neutral detergent with 1 teaspoon white vinegar and 1 quart cold water -1/4cup baking soda and 2 cups cold water -1/4teaspoon mild, non-bleach detergent with 1 liter cool water -For cranberry juice: apply 3% hydrogen peroxide then ammonia (Note: Do not use ammonia on wool or oriental rugs.) 3)Gently press on the cloth with the bottom of a spoon. This allows you to set the solution into the stain without damaging the carpet fibers. Repeat until the stain is gone. 4)Blot with a clean dry cloth, spray water, and then blot with another dry cloth. Repeat until all the cleaning solution is removed. 5)Cover area with a clean cloth or absorbent pad, and place heavy objects on top. Leave set for several hours to absorb any remaining liquid, then let air dry afterwards. 6)Vacuum the area after it has dried completely.

You could try a heat transfer 1 take some cleaning solution with a low Ph. apply to spot 2 take a clean white cloth/rag set over stain 3 use a steam iron on med heat a go over towel a few times picking up towel and moving several times. The stain should eventually wick up into the towel, just be careful not to get it to hot you could burn carpet