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My CarpAnt Story...did I solve it?


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Posted by Lincoln of New England on 1:04:44 7/9/2011 from 71.181.59.227:

Long post, but trying to be as succinct as possible...

Act One - 2009
- Live in rural area...house < 50 ft from wooded areas
- Had CAs (carpenter ants) in unfinished attic (3rd floor) of single family home in 2009. They made a nest in

between sheets of plywood stacked on joists (the board was used as flooring eventually)
- CAs were using the loose insulation (white fluffy stuff) to build their nest.
- Never saw a CA in the rest of the house.
- Used vaccuum to removed CAs/nest
- Did not find any additional CAs

Act Two - 22011
-Very wet/cool spring and early summer in New England
-Noticed 2-6 CAs each day...mostly in 2nd floor bathrooms (in bath/shower near water)
-Some found in Dishwasher on 1st floor
-Notice many dead ants in unfinished basement near a well-fed spider's web
-Used COMBAT traps with Fipronil in one bathroom and Dishwasher
-Noticed dead or very weak ants in specific area of basement
-Noticably less ant activity in Bathrooms (and none in dishwasher) after 2-3 weeks
-Noticed 10-12 dead/very weak WINGED CA DRONES in same specific area of basement
-LIGHT BULB MOMENT: Looked upward between floor joints and INSULATION (pink stuff) and saw an ant in a gap of the

insulation.
-Slowly peeled out the insulation and found CAs crawling on underside of floorboard, joists, and paper side of

insulation
-GOT THE SHOP VAC and, with help, began to vacuum up all CAs (est. ~500-800) and eggs that were in the cavity.
-Traced the nest along the joist cavity toward the basement stairwell and to the outer wall (whole length)
-Along the outer wall, a large cut-out in the floorboard allows a PVC pipe to be connected to the main water drain

of the house, upward to the 1st and 2nd floor...right near the DISHWASHER and upwards to the bathrooms.
-Used GREAT STUFF to seal up the gaps in the hole for the PVC pipe (but ran out--so I need to buy another can of

GS to finish the sealing job.
-Checked adjacent joist cavities but did not find any CAs yet

SYNOPSIS:
-After reading your website (post cleanup), it seems I made the right decision in both cases (vacuum-power)
-I found 2-3 stray CA's wandering the area between the joists
-Detective work means leaving the dead-ones in place to isolate colony sources (otherwise you might forget where

you found them).
-Pipes that run between floors seem to be a great highway for CA's to move floor to floor.

QUESTIONS:
1) Was this a good approach?
2) Were the two colonies (attic 2009 and basement 2011) related?
3) It seems the COMBAT with Fipronil did work to reduce incidence of CAs...is this product recommended?
4) Is it possible I did not fully destroy the nest?



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