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Old 07-09-2015, 09:48 AM   #1
CWinLV's Avatar
Newmar Owners Club
Texas Boomers Club
Join Date: Jan 2014
Location: We fulltime, so "Home is where we park it!" (Originally Las Vegas)
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Gnats in black tank

Seems we've picked up a breeding colony of gnats in our black tank!! For those who have experienced the same problem, what did you use to rid your tank of the pesky creatures?


'06 Newmar Dutchstar 4320 400hp Cummins on a Spartan tag-axle chassis w/ 2014 CRV
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Old 07-09-2015, 10:37 AM   #2
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Appalachian Campers
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Location: Dixie !! (north Georgia) USA
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We had the same thing happen once when I left the valve to the black tank open accidently. I ended up spraying bag spray into the toilet and opened the toilet valve and fogging the tank as much as I could about 20-30 seconds. Nasty creatures and gross , especially when they fly out into the bathroom area.

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Old 07-09-2015, 10:54 AM   #3
Join Date: Mar 2013
Location: Edge of Hill Country
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They can enter thru vent line. Some stainless steel "wool" in there will allow air but limit bugs and creeping things.
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Old 07-11-2015, 03:21 PM   #4
Join Date: Jun 2015
Location: Seattle, Washington
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Just DONT pour bleach in there. It will react to the ammonia from urine and cause a poisonous chemical reaction that will turn your RV into a gas chamber (There was a great post on this last week)
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