That being said, it is generally recommended to clean the dryer vent going to the outside on a regular basis. The frequency of cleaning depends on several factors, including the usage patterns of the dryer, the length of the venting system, and the type of materials being dried.
It is generally recommended to clean the dryer vent at least once a year or more frequently if you notice any signs of reduced airflow or lint buildup. Regular maintenance helps ensure optimal performance, energy efficiency, and reduces the risk of fire hazards associated with clogged dryer vents.
If you suspect that your dryer vent needs cleaning or if you're experiencing any issues related to drying performance, it's advisable to consult a professional technician or a qualified vent cleaning service to inspect and clean the vent system properly. They will have the expertise and equipment to perform a thorough cleaning and ensure the safe operation of your dryer.