Use a blotting motion to work the detergent into the affected area. If spot is being removed, continue applying detergent and blotting with a white paper towel until the spot is removed. Blot and repeat until carpet is stain free. Light will cause peroxide to change back to water, so no rinsing is necessary. Apply pad of paper towels and weight down with brick.
Some spots require specialized treatments.
A. Blood, catsup, cheese, chocolate, cough syrup, mixed drinks, soft drinks, soy sauce, starch, toothpaste, water color, and white glue. Blot with white paper towel to remove as much of the stain as possible, then neutralize with an ammonia solution. Saturate spot using spray bottle. Do not wet backing. Blot with a white paper towel to remove excess moisture.