Brushing the areas with a vacuum cleaner or brush can help. Deep dents can necessitate trying several things to restore the carpet's fluffiness. Spray the flattened carpet with a mixture of vinegar and water. Just spray the affected area with this mixture, wait 20 to 30 minutes, and then blot it up with a towel. Next, fluff the carpet with a spoon's edge, which will cause the carpet to fluff up.