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Product Details

Big Bag Fly Trap

This trap is baited for fly species which are most common in agricultural areas -- including house flies, false stable flies, blow flies, blue and green bottle flies, flesh flies, face flies and many others.

The RESCUE!® Big Bag Fly Trap contains a fast-acting fly attractant that starts working as soon as you add water. Food and feed additives are combined with other dried ingredients to make the RESCUE!® attractant. Lured by the scent, flies enter through the yellow top cap and drown in the water.

  • Designed to handle areas with heavy fly concentrations

  • Powder attractant is contained within the trap itself

  • Attractant dissolves and activates quickly when water is added to the bag

  • Trap's design eliminates touching the bait or the flies

  • Completely disposable

  • Holds up to 40,000 flies (yes, we counted them all!)

Once lured inside the trap, the flies cannot escape and drown in the water added to the bag.

Where and How To Use

The RESCUE!® Big Bag Fly Trap is intended for use outdoors. It will help control the fly population outside before it ever becomes a nuisance inside.

Suggested locations for the trap include:
  • Around stables, kennels and barns
  • Around poultry, hogs, sheep, dairy and beef cattle
  • Near garbage bins or dumpsters
  • Near a compost pile

The RESCUE!® Big Bag Fly Trap can be used whenever hot, humid conditions or the presence of animals or garbage causes an outdoor fly problem.

What People Are Saying

Fly collection perfection
Posted by Cherie Barnett
 on 15th May 2016

Wish I could buy them in bulk.

Totally amazing!
Posted by dvdnj
 on 22nd Sep 2015

After I bought a puppy this year, every fly from a 3 block radius must have converged on my property! Even though I cleaned up 'his area'  every day, the flies were out of control.  There were literally hundreds of flies, although I also sprayed the area with Raid Flying Insect several times a week (kills for weeks? not even close).  Finally, I picked up a Rescue bag because it seems better than the kind that you re-use (I returned that item to the store after I read the instructions.  It sounded disgusting!). The price was right and what could I lose?  Well, within a day, the bag was filling up - fast!  Less than a week, and it was to capacity with flies!  The dog's area was almost fly free. I couldn't believe anything so innocuous could be so effective. After the initial 'kill' (2 bags a week for a few weeks), I am now down to 1 bag every 5-7 days, but I always have plenty on hand in case a new 'bumper crop' emerges. Disposal is easy too: I close the cap, and put it in two zip-lock bags -- spraying with Raid in between to ensure they are dead when I throw it in the trash. I seriously do not know what I would have done with the fly problem had I not found this product. I even told the clerks at the store how great it was when I bought another armload, in case a customer wanted to know how effective it was! 

Amazing fly magnet
Posted by G. Leclerc
 on 9th Aug 2015

We've been hit by a lot of flies this year. This being our second year in a different part of the country, we thought it may just be something to live with. We finally got enough a few weeks back and bought our first Big Bag from Lee Valley.


Within 3 weeks, it was almost entirely full!


We bought 2 more, to replace the existing one next to where our dogs do their business and add one close to the bins and compost boxes.


We will start this much earlier next year, which will hopefully thin out the flies from the start of summer!

Posted by Craig T.
 on 22nd Oct 2014
Following a huge rainy (monsoon) season, we were getting hit with a plague of flies. I tried everything I could find including strips, sprays, and home made bottle traps on the internet. Nothing worked. My neighbor got a Big Bag from a local feed store and within an hour of putting it up had had a black fog of flies both in it and around it. I headed right out bought two. Same thing. Holy crap, these things are absolutely amazing! 3-weeks later I took them down.  Water evaporated and 100% full of flies. The bag says it holds 40,000. I didn't count, but there were a LOT! Best part was that they weren't in my patio. I've recommended them, and will never use anything else. Great product, that works above and beyond all expectations! Anthem, AZ
I saw someone using this at
Posted by Pat O'Brien
 on 20th Sep 2014
I saw someone using this at our trailer in Napanee and bought one for my home and I am amazed at how many flies were caught in the Rescue Fly trap. I also bought the Rescue Yellow Jacket Trap and it also worked better than I ever expected. I will definitely buy them every year for my trailer and at home. I tell everyone about them because they really do work!
Posted by Anonymous
 on 31st Jul 2014

I've NEVER posted a review of any product on-line ever,,, until now


This is the best product I've ever purchased.  It Totally works

Posted by Anonymous
 on 27th Jul 2014
Best product for fly's
Unbelievable Product that Does The Job
Posted by JudyS
 on 12th Oct 2012

I have had an annoying fly problem all summer in Ocean City,NJ. I tried everything and finally saw your product in a local hardware store & decided to try it. It worked immediately and I think I caught every fly in Ocean City!! I will continue to buy this product, nothing else compares to it. I am glad that it "does what it says it will", there REALLy is truth in advertising with this product. Thanks for a great product.

Excellent stuff!
Posted by Shannon E.
 on 27th Jun 2012

I'll admit that I was completely grossed out when I had to throw the trap away, as it was so full.  At the same time, I did appreicate the lack of flies in the yard.


One word of advice, even when you think that the trap is high enough to be out of reach of your largest dog, it probably isn't.  Trust me when I say that you do NOT want this stuff to spill in the yard or on your dog.  :)


With that said, I will continue to use this product.  It does the trick!

It works!!!!
Posted by Deborrah and Jeff Trithart
 on 14th Jun 2011

We have tried every fly product on the market with minimal success.   The Rescue products work and work very well!!   Because of our business with equine, we have a very large fly problem, not anymore!   In just the last 2 months, we have eliminated most traces of flies on our peoperty other than what is wanting to get into the traps, everything else is dead.   This is the one and only product we will use and recommend it to everyone.   Finally someone has come out with a product that works!!


Deborrah and Jeff Trithart

Black Mountain Miniature Donkeys

Sundre, Alberta

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