I'm all for kids helping clean, BUT, I'm not letting them near those chemical laden, fume filled, carpet shampoos! No way!
We have enjoyed using the following, very easy, carpet cleaning recipe:
3 cups water
3/4 cup castile soap
10 drops peppermint essential oil
Mix all ingredients in a blender. Rub the foam into soiled areas with a damp sponge. Let dry thoroughly and then vacuum.
Easy! The kids really enjoy rubbing the foam into the carpet.
The recipe is from my favorite cleaning book: