My dealer recommended the screens but I'm guessing they just wanted to sell me something from the parts department the day I picked up the TT. I don't believe we have a big mud dauber problem (no lakes or standing water by our storage lot) but I'm leary of wasps and moths finding their way into the those cavaties. We had a moth die in the main ignition burner tube in our home furnace a few years ago and it cost me $100 to find and remove him...apparently they like the smell of sulfur. I'll add cleaning the screens to my annual maintenance list but I'm keeping them in place.
