Quote:
Originally Posted by GuidoK
I also have my doubts on if they do more good than wrong.
In any case it's sensible to periodically check if those drains are still unclogged/free of debris.
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Mine have been off the car for at least two years now and no critter invasions so far. The car is garage kept, gets driven at least 2-3 times a week, and no winter storage since I'm in Florida. I could see may there might be some benefit if the car was stored long term outdoors, but even then I agree they probably do more harm than good.