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Cluster Flies


spunko
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Argh! Another problem at my house - the joys of living in the countryside, I have a load of cluster flies in my attic. Maybe 100 or so, and they get into the rest of the house (no idea how). I sprayed them with Raid yesterday and they all died but they're back again today. Aside from buying one of those "cluster busters" is there any way to prevent them?  Had a quick Google and most of the suggestions are just to lump it...

(The Cluster Busters dont have particularly good reviews: https://www.amazon.co.uk/Cluster-Buster-Window-Trap-Flies/dp/B00757QZMS

Only thing that seems to have good reviews is smoke bomb: https://www.amazon.co.uk/Cluster-Killer-Smoke-Bombs-3-5g/dp/B012D6YZM2/ref=sr_1_5?s=outdoors&ie=UTF8&qid=1539427333&sr=1-5

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This stuff is meant for fleas but also seems to nuke all insects:

https://www.amazon.co.uk/Virbac-Indorex-Flea-Spray/dp/B00R015AAM/ref=sr_1_4?ie=UTF8&qid=1539428838&sr=8-4&keywords=indorex+flea

 

Its not cheap but it does work well. I used it a couple of years back when we had a flea infestation from the cats. Sprayed the whole house while kids were out for the day. Found lots of dead spiders and woodlice afterwards.

I have some left over which I use to keep the false widows under control.

I've never tried it on flies but it contains permithryn which I believe is deadly to all insects. Takes a day or two to work.

 

 

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Major problem here.  Talking hundreds or more.  We live surrounded by fields where they hatch from in a sudden change to warmer weather and seek warmth on exterior house walls or inside.

Have the interior roof down atm but sealed with temp plastic sheet.  Still found ways in.  And the noise.  Raided them but big mess.

Can't see how we can have an attic filling up with them and dying so either we will net the roof interior (from Ebay) or have a cathedral ceiling.  Probably the latter.

Or nuke the land around us as nuking house no good as just kills the ones temporarily moving in.  Believe they do not lay eggs or hatch inside the house.

Deffo the worst this year for the last 5 or so.

Get about 4 to 5 swarms a year.  A short sharp annoyance and then over.

 

Edited by Harley
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Another thought, I know a few people with livestock who need to keep the flys under control (horse flies, nasty buggers) and they use those baited bags. Totally gross but effective and have the bonus of trapping the flies in the bag so you don't get a build up of dead insect matter in your loft. Not if they would lure cluster flies but could be worth a go.

Cluster flies only come in to over winter, rest of the time they live outside and I believe they are parasitic and lay their eggs on earth worms - will need to google that and check though, might be thinking of something else.

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2 hours ago, null; said:

Another thought, I know a few people with livestock who need to keep the flys under control (horse flies, nasty buggers) and they use those baited bags. Totally gross but effective and have the bonus of trapping the flies in the bag so you don't get a build up of dead insect matter in your loft. Not if they would lure cluster flies but could be worth a go.

Cluster flies only come in to over winter, rest of the time they live outside and I believe they are parasitic and lay their eggs on earth worms - will need to google that and check though, might be thinking of something else.

Hi - are those bags the same as the "red tops" I was looking at?

https://www.amazon.co.uk/Red-Top-86757-Fly-Trap/dp/B06Y34JR84/ref=sr_1_3?ie=UTF8&qid=1539613213&sr=8-3&keywords=red+top+fly+trap

Others, similar, listed on Amazon.

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32 minutes ago, Harley said:

Hi - are those bags the same as the "red tops" I was looking at?

https://www.amazon.co.uk/Red-Top-86757-Fly-Trap/dp/B06Y34JR84/ref=sr_1_3?ie=UTF8&qid=1539613213&sr=8-3&keywords=red+top+fly+trap

Others, similar, listed on Amazon.

Yes, they are the ones.

I just noticed in the amazon comments about the smell - something to keep in mind, they are a bit wiffy!

Might not be a problem in a loft but I guess all depends on ventialation and wind direction.

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15 hours ago, null; said:

Yes, they are the ones.

I just noticed in the amazon comments about the smell - something to keep in mind, they are a bit wiffy!

Might not be a problem in a loft but I guess all depends on ventialation and wind direction.

Great.  I don't think they're for the loft but out in the fields and garden.  Nip the buggers before they get near the house.  I love the tone of the comments from those who have clearly suffered too!

 

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16 minutes ago, Harley said:

Great.  I don't think they're for the loft but out in the fields and garden.  Nip the buggers before they get near the house.  I love the tone of the comments from those who have clearly suffered too!

 

Might be an idea to mount one close to a south facing wall, ideally something a short distance away from the house like a shed or outbuilding.

The people I know who use them for horse flies were told to place them close to a north facing fence/wall, I'll enquire more about that when I see them next (I don't see them very often so it may be a while!)

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swiss_democracy_for_all

Not long ago everyone was saying what a ecological disaster the death of all the insects was. :-)

 

 

Edited by swiss_democracy_for_all
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45 minutes ago, swiss_democracy_for_all said:

Not long ago everyone was saying what a ecological disaster the death of all the insects was. :-)

 

 

As far as I'm concerned wasps and blowflies could all die and nobody would mind.

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Happy Renting

They are annoying buggers. They fly like drunk houseflies and fly into you as if they haven't seen you.

I moved into a house with a velux window over a bath. I opened it, and about 200 dead ones fell into the bath.

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  • 6 months later...

An update....

I seem to have the upper hand atm.  Smoke bombed my roof twice this year to get them whilst they over-wintered there.  Quite a sight to see hundreds roll out from the roof tiles.  Then set up a Red Top but not much happened until now - very few in the house but plenty in the bag.  Only thing is I now have a few wasps indoors!

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  • 2 months later...

And another....

I would post a photo but it's too gruesomely satisfying.  A Red Top full of flies, thousands of them.  Out comes the sun and in they go.  Smells a bit but fine.  None of the usual layer of dead flies inside the house on the window cills.

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  • 6 months later...

Hello, sorry I know this post is from a couple of years ago, however was just wondering how you got on with your cluster fly problem? We moved in to our house in August and have had issues pretty much since day 1 sadly. They are overwintering in our velux windows and it’s driving me up the wall as cant open any windows without heaps coming in :( 

planning on getting the red top fly trap and to try and kill them while they’re overwintering but will we just get this problem Year after year? Interested how you guys have got on the last few years. Thanks for your help!

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The trouble is even if you do entirely kill off one colony it is very likely more cluster flies will still return the following year as they leave a powerful pheromone which attracts new comers.

I ended up selling a house mainly because of a recurrent cluster fly problem. I also viewed a house last year... loved the house, loved the area, house was cheap enough that I could have retired pretty much immediately in my mid 40's, but had to dismiss it out of hand as I spotted cluster flies in the bedrooms.

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8 hours ago, Royston said:

The trouble is even if you do entirely kill off one colony it is very likely more cluster flies will still return the following year as they leave a powerful pheromone which attracts new comers.

I ended up selling a house mainly because of a recurrent cluster fly problem. I also viewed a house last year... loved the house, loved the area, house was cheap enough that I could have retired pretty much immediately in my mid 40's, but had to dismiss it out of hand as I spotted cluster flies in the bedrooms.

I'm redoing the loft and have bought some fine mesh netting.  I will also try hitting the place hard with ozone (professionally done given the hazards).

BTW, those Red Tops worked a treat.  Absolutely full of flies and a lot less went into the loft or house.

Edited by Harley
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  • 1 year later...

Time to give them another mention.  Red Tops are the business but at £15 each overpriced.  I bought in bulk to save a bit.  Two are already full but they kept the house mostly fly free.  I'm trying to make my own but need to buy some smelly seeding material.

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