Look closely my friends and sure enough...the panty hose serve as a lint collector for a clothes dryer. The good news is that, a periodic visit to the garage will reveal when the "legs" are nearly full and can be emptied. The bad news is that dryers that vent to a garage add warm moisture that may lead to fungal growth and combustible dryer lint that, even in small quantities may be flammable.
Clothes dryers should always be vented to the exterior through rigid or metal flexible piping to a non-restricted (not screened) exhaust and equipped with a back-draft damper.
Here is some information about safe dryer venting that I distribute to my customers.
dryer ducting must be a minimum of 4" in diameter and shall not be reduced
in size. Clean, unobstructed,
frictionless ducts encourage air flow efficiency, quicken drying time, add
longevity to clothing life and reduce utility bills.