Struggling with damp clothes after a full cycle? This could be a sign of dangerous lint buildup in your dryer vent. According to the National Fire Protection Association (NFPA), dryers cause an average of 15,970 home fires each year, nearly 30% are due to lack of proper cleaning resulting in lint accumulation. It is recommended that your vent should be cleaned at least once a year—or more often for heavy use. The longer you go without cleaning your dryer vent, the greater a risk it becomes.