This is another great tip from Haley's Hints. I love this because it is made from household articles and will save money. Combine 1/2 t ammonia, 3T dish soap, 1 t white vinegar and 3/4 C water. Beat until frothy or pour into a foaming bottle. Using only the foam and not the liquid, apply the foam to the carpet. Use a sponge to scrub away the dirt and grime.