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Loraina from Barrington, Nh 03825 writes,

Drain moths

Had a problem 7 years ago when a pipe broke underground in our mobile home park. I tried the tape over the drains but didnt see any and felt they were coming in through the screens from outside. Had ordered some bio gel from another company at the time which took care of the problem. This year our leach field broke down and it was quite a few months before the owner came in and fixed the problem. Once he fixed it, now I have seen the moths again. But again, I notice them outside. I just ordered the 2 cans of the Gentrol Aerosol IGR after reading the high rated reviews on your website. I would like to know if I can spray this outside by the area where the leach field is? I believe that standing water and matter from the past months were not fully cleaned up.


Gentrol IGR is an indoor only product because it is not photo-stable and will rapidly breakdown when exposed to sunlight. You can continue to use the Gentrol IGR indoors to help limit the growth and breeding cycles of the drain flies.

Answer last updated on: 08/18/2011

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