Cleaning your Ducting on your Gas Dryer

[ScreenPrinter123]

So, I'm wondering how often you guys clean out your ducting on your dryers?  I've attached a photo of ours so you can see what I'm talking about.  It would be pretty time consuming to take pipes apart to find out it didn't need it, so do you all use a pipe camera or just have a set time per year to take them apart and clean them out?  I'm thinking of getting the equivalent of a plumber's camera...maybe a harbor freight buy?  Any thoughts?

Thanks

[inkman996]

I have seen an equivalent to a plumbers snake except a large wire brush on one end. I remember my father having one when i was young, it was on a roll atleast 30' long, I am sure this would be the best way to tackle that and only have minimal joints to open up.

[ebscreen]

They make chimney sweeps with flexible fiberglass handles, though that is a heck of a turn you got there.