A Need, Not a Want
Dryer vents that are left to fill with lint become an issue and potentially a danger to your home. Dryers have lint filters built in to help catch lint that is created when you use your dryer. A lint filter is not full proof. Usually, about 25% of the lint gets through the filter and can accumulate on the walls of the vent. This vent buildup reduces the air flow and can affect the performance of your dryer. This buildup can eventually become a blockage and a hazard to your safety.
A dryer tends to become less efficient with a blockage in the vents. The lack of outward air flow makes your dryer work harder which can shorten the lifespan of your appliance. To keep your dryer running effectively, it is important to have the dryer vent cleaned periodically.
A vent with high contents of lint has a danger of catching fire. There are around 15,000 fires a year that start because of dryer vents. Lint is a great tinder for starting fires. Many people put it in survival kits because of how easily it catches fire. All it takes is a spark or high amount of heat for a fire to start. Combine that with the high amount of airflow going through your vent and you will have a large fire in no time.