After every load
Clean the lint filter. The filter does not remove buildup already inside the exhaust route.

A HOMEOWNER SAFETY GUIDE
Cleaning the lint screen after each load is essential, but lint can also accumulate beyond it. Learn what national fire data says, which signs deserve attention and where vent cleaning fits.
Scope and price discussed for your home.
THE BASIC VISIT$99 per dryer vent
Accessible vent cleaning and a visual inspection are included. The exact areas that can be reached depend on your home.
See the full serviceWHY IT MATTERS
USFA says failure to clean was the leading factor contributing to ignition in 31% of home clothes dryer fires during 2018–2020. That is national historical data, not a prediction for your home.
Clean the lint filter. The filter does not remove buildup already inside the exhaust route.
Longer drying times, a damaged connection or an outside flap that stays closed can justify a closer look. They do not diagnose a clogged vent by themselves.
Basic cleaning removes accessible lint and debris. Mechanical, electrical, installation and use-related risks also need appropriate attention.
A CLEAR ANSWER
Cleaning addresses lint buildup, one known contributing factor. It cannot guarantee that a fire will not occur or resolve electrical, mechanical or inaccessible vent problems.