Neglecting maintenance is the primary cause of dryer fires, with lint being the most common ignition material. Insufficient airflow and lint accumulation in the dryer or exhaust duct can lead to overheating, causing the high-temperature thermal cut-off switch to cycle excessively and ultimately fail. Overheated dryers pose a risk, as flames can spread through melted plastic hoses to walls or other flammable materials. To ensure safe and efficient dryer operation, it's crucial to use proper venting materials, avoiding flexible plastic vents that are combustible. For optimal airflow and reduced lint build-up, utilize the shortest distance with all-metal dryer venting materials.