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Old 08-31-2011, 03:16 AM   #1
Aug 2011
Halifax, Nova Scotia
Posts: 11

We get a pretty nasty fruit fly colony in our house in the summer, and it's kind of impossible to keep them away from everything, especially giant quantities or sugary, fermenting liquid.
My primary is a bucket and we've had some issues with flies getting inside. Does anyone else have problems like this? Has anyone had things go wrong with their beers? Any tricks to keep them away 'cause right now having the bucket wear a tshirt isn't working.

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Old 08-31-2011, 03:21 AM   #2
May 2008
Southern, NJ
Posts: 3,486
Liked 54 Times on 42 Posts

This year was not bad at all, but in past we used old fashioned fly paper hung over a glass of some beer or fruit juice. They swarm around the glass and either land on the paper or wind up in the beer/juice and drown.

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Old 08-31-2011, 03:22 AM   #3
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Apr 2009
☼ Clearwater, FL ☼
Posts: 27,155
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Try this?

- Andrew

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Old 08-31-2011, 03:32 AM   #4
Aug 2011
Halifax, Nova Scotia
Posts: 11

Yeah, we have traps everywhere but my main concern is keeping them out of the beer!

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Old 08-31-2011, 03:38 AM   #5
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Feb 2011
Wai, Hawaii
Posts: 3,538
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I was brewing in 2 gallon bucket and after 1 week took out the airlock and replaced it w/clear shipping tape. Punched a lot of pin holes in the tape. Then I put it in a rectangular colman cooler w/ice and closed the top. Some how the tape cam up on the edge and some kind of bug got into the brew. When I opened the bucket 2 weeks later all I could smell was vinegar. Had to dump two buckets like that. 3 gallons down the drain. Gonna buy a 7.1 cu. ft. freezer so I can keep the airlock inplace.
Kaiser Ridge Brewing
Fermenting: Joe Louis IPA (black)
Fermenting: Vanilla Porter
Bottled in the refer: Malahini Pale Ale
Bottled in the refe: Old Glory Stout
Bottled in the refe: American Imperial Stout
Bottled in the refer Oktoberfest


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Old 08-31-2011, 05:54 AM   #6
Feb 2007
Posts: 235

I have similar issues with bugs. I have a glass carboy and always use a blow-off tube. I push the bung/stopper into the top of the carboy pretty hard so bugs don't get in there and so far that has been successful. I just leave the blow-off tube in place until I'm ready to rack - I don't mess with it or take gravity readings - everything stays in place.
You should never hesitate to trade your cow for a handful of magic beans.
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Old 08-31-2011, 02:17 PM   #7
Dec 2010
Dartmouth, Nova Scotia
Posts: 20

Get some sodium metabisulphite (wine making sanitizer) from the LHBS, mix up the recomended dosage in a sprayer bottle, and lightly coat the top of the bucket. I've been doing this for years and it works fantastically. No bugs in my beer.

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Old 08-31-2011, 06:26 PM   #8
Jun 2011
Dallas, TX
Posts: 32
Liked 2 Times on 2 Posts

Can you look at taking out the source of your issues (the colony)? Maybe a once a year call to an exterminator could fix the actual problem and then you would not have to look for temp solutions.

if this is happening every summer to such an extent they are swarming your beer, it might be time to seek professional help.

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