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Answering your W*H*Y questions

WHY_Package With the W*H*Y Trap for Wasps, Hornets & Yellowjackets in consumers' hands and about six months of sales under our belts, we've had the chance to hear which questions are most frequently on the minds of users.

Where should I place the W*H*Y Trap?

Hang the trap outside at least 20 feet from any outdoor living areas to draw wasps, hornets and yellowjackets away. In general, hanging the trap closer to a house, deck or other structure will draw more paper wasps since they frequent those areas for nest building sites and materials. If a nest location is known, the W*H*Y Trap should be placed at least 20 feet away from the nest.

It is best to avoid placing the trap inside bushes or trees where foliage will surround the trap. Open-air locations will allow the attractant scents to release freely and will yield better catches.

In extreme hot and dry conditions, it is best to hang the trap in the shade to keep the liquid attractant from evaporating too quickly. If nighttime temperatures are lower than 50°F, we recommend hanging the trap in a sunny spot. 

If catches are low, try moving the trap to a new location, such as a spot that receives different wind or sun patterns. 

What time of year should I use the W*H*Y Trap?

As soon as the daytime temperatures hit 70 degrees on a consistent basis, the queens will start emerging from hibernation to look for new nest sites. Paper wasp queens are the first to start flying. You can begin using the W*H*Y Trap at this time to catch the queens, and continue using it all spring and summer and into fall to catch the workers.

Once the queens have already begun building their nests in spring, there will likely be a quiet period of lower catches until the worker populations begin to emerge.

DSC_0070 Will the W*H*Y Attractant work in my Yellowjacket Trap?

No; the W*H*Y Trap is designed with two chambers and two entrances to keep the attractants separated. If combined in a trap with one entrance, the three attractants in the W*H*Y Attractant will cancel each other out.

Is there something I can put in the W*H*Y Trap to rebait it, instead of using the W*H*Y Attractant Kit?

Sorry; but no. It took our scientists six years in our lab to come up with the right formula to lure all 21 species of insects, and although the ingredients are naturally-occurring, they are created by chemists and cannot be replicated with anything you would find in your refrigerator or pantry.

Will the trap work on bees?

Our product is not targeted at bees because they are beneficial for pollination. The attractant in the W*H*Y Trap is not appealing to bees.

I've used your Reusable Yellowjacket Trap before and I like the long-lasting (10-Week) cartridge. Will you eventually have a longer-lasting attractant for the W*H*Y Trap?

Yes! That's what our scientists are working on right now. We hope to have a longer-lasting W*H*Y Trap Attractant Kit on the market within the next two years.

Have a question not answered here? Ask it now by leaving a comment!

June 17, 2009 in Helpful resources, WHY Trap | Permalink


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I have been using your Rescue fly trap for years, great product. But the WHY, well doesn't really impress me... I am on my third "re-load" for the WHY trap. I have it hung ~15' from our wooden deck in the backyard, a wasp heaven.... Up to this point I have caught (4) moth's, that's it.... Any ideas?


Posted by: Jim Patteson | Jun 18, 2009 7:53:25 AM

First off, thank you for using our RESCUE! Fly Traps, and for giving the WHY a try. A location near your deck would seem to be a great spot for the trap, but since you haven't had success there, I would suggest moving it a little further away from the deck. The reason for the low catch could be the "quiet period" between the queens establishing a nest (if any have) and the emergence of the workers. Here in the Northwest, we are in a lull right now between the queen season and the worker season. Our company president only caught his first worker last week. You may see better results next month if the worker populations start to grow. Any workers you catch will weaken an established nest.

Posted by: Stephanie | Jun 18, 2009 4:29:49 PM

Ok, from what it looks like i do not think that we have Paper wasp but we have some type of wasp... they are like a solid black Will it work on them? I have it hanged outside of the house and i see a wasp on my porch and its as if its ignoring the trap

Posted by: Dakota | Jun 18, 2009 5:31:35 PM

Should I save the WHY Tap I purchased this year? Will there be a refill for the WHY Trap on the market for next year?

Posted by: B Ann | Jun 20, 2009 2:23:18 PM

Where do I get refills?

Posted by: Rodger | Jun 21, 2009 8:41:13 AM

I am having no luck finding refills for the WHY trap....the price of the refill and shipping from Aceoutlet is $14.95.
Where can I find a more reasonable bait refill for my WHYtrap?

Posted by: Gary Jones | Jun 23, 2009 7:06:10 AM

When I first started using your trap, the insects were being drowned. I rebaited the trap after two weeks, and now the insects are in the lower section of the trap looking for a way out. Did I do something wrong the first time? Or the second time? Hmmmmm.

Posted by: Joan | Jun 23, 2009 6:55:29 PM

we bought your yellow jacket trap and so far the only thing your trap has caught was me. please advise why it is not catching yellow jackets when their are all around it.i talked to management at lowes and they said to talk to the manufacture.

Posted by: carol rabbitts | Jun 24, 2009 9:34:04 AM

Your product seems like it is a dream come true, trapping both yellow jackets and paper wasps, both of which are very prolific around our yard here in Colorado. However, even after the second refill of attractants, the only thing caught has been four queen yellow jackets (absolutely no paper wasps), and each yellow jacket has escaped after a few hours - I watched one climb back down through the cone. I hung out my old Rescue trap (in the same spot) for yellow jackets only and it's working fine with the attractant lasting much longer. So far, I have more than a $25 investment in the W-H-Y trap with no results. Any ideas about what's going on?

Posted by: David | Jun 24, 2009 1:52:03 PM

Dakota: If the wasp-like insect you have is solid black with no yellow, white or red markings, that doesn't sound like one of the species we catch. Where are you located? Any part of the U.S. will have some of the species the WHY Trap targets. Give it a couple of weeks, perhaps move the trap to several different locations, and let us know if you're able to catch anything.

Posted by: Stephanie | Jun 26, 2009 11:33:37 AM

Ann, Rodger, Gary: The refill attractants for the WHY Trap should be available now, where you purchased the trap initially (with the exception of Wal-Mart for this year only). Most Ace Hardware and True Value Hardware locations should be able to order it for you from their warehouses without any shipping cost to you. I have compiled a list of online retailers where you can find it... see this link to an earlier blog post:


Posted by: Stephanie | Jun 26, 2009 11:40:31 AM

Joan: Not at all; you did everything right! There are two ways for the insects to get into the WHY Trap. If they enter through the top, they fall in the water and drown. If they come in through the bottom, they dehydrate. The attractants in each chamber will lure different species at different times. I'm glad to hear you've had good results so far.

Posted by: Stephanie | Jun 26, 2009 11:42:47 AM

Carol: If you bought our yellowjacket trap and are not seeing results, you could possibly have paper wasps. They are frequently mistaken for yellowjackets because of their yellow and black markings. If that is the case, then you may have better results with our WHY Trap. On the other hand, if they are truly yellowjackets, you might try adding some rolled-up turkey ham lunch meat to the meat spikes in the bottom cap, or some apple juice to boost the attraction. Please don't hesitate to call our customer service line at 1-800-666-6766 if we can help you further. We want it to work for you!

Posted by: Stephanie | Jun 26, 2009 11:46:37 AM

We just set it out in the yard and they have not gonr there yet. My girlfriend is getting nervous...hates flying things......how long does it take to work

Posted by: Lance | Jul 5, 2009 10:29:50 AM

I too live in Colorado. I bought the WHY trap 3 days ago, as we disovered a wasp nest in our backyard that we cannot get to to destroy. I was excited when only a few hours after putting up the trap, we had caught several wasps in the upper chamber. I have the same problem as David (posted June 24), they are escaping from the upper chamber. I do not find a response to his post. Can you please respond

Posted by: Eileen | Jul 20, 2009 8:29:02 AM

I just purchased the Why Trap from Walmart. I live in Kentucky and we have a problem with wasp (don't know exactly what kind) but they are plentiful around our home and in our detached garage (all wood structure). We had pest control service last year because they were so bad and even getting into our home. The reason I am writing to you is because all the comments I have read don't seem too promising......which makes me skeptical of even opening the package for use. Can you somehow assure me this product does work as 15.00 is a lot when you are on a limited income. If it will work it will be worth the money spent because we need to get a handle on this problem.

Posted by: priscilla lambert | Jul 21, 2009 5:32:22 PM

Eileen: if wasps are escaping the upper chamber, you can add a couple drops of dishwashing liquid to the water -- this will coat their wings and make it impossible to fly.

Posted by: Stephanie | Jul 22, 2009 12:28:48 PM

Priscilla: Thanks for purchasing our WHY Trap at Wal*Mart. We stand behind our product and want you to be happy with it. When you hang it up, be sure to place it at least 20 feet away from any known nest locations. If it doesn't start catching in about 48 hours, try moving it to a different location. If you are dissatisfied for any reason, please give our Customer Service reps (Ann, Susan or Cassandra) a call at 1-800-666-6766... you'll reach one of them between 8a-4:30p Pacific Time. They will work with you to troubleshoot any issues, or refund your purchase price if that's what you prefer.

Posted by: Stephanie | Jul 22, 2009 12:37:57 PM

Haven't caught one yellowjacket with the new WHY TRAP but have caught several in my 2 old style Rescue Traps. I do see many yellow jackets and wasps flying in the area. Did get a few spiders and a Earwig in the WHY. I can't get needed refill attractants for either the old style or new WHY traps anywhere in my area. Walmart sells the whole trap but does not and will not carry the refills as well as Ace Hardware. So much for the "reuseable" part of the Rescue trap. Quite expensive to order on line plus the shipping and delay involved. Feel rather disappointed with RESCUE at this time.

Posted by: Dan | Jul 24, 2009 1:04:22 PM

Does the Wasp trap work for Cicada Wasps

Posted by: Joe | Jul 25, 2009 10:39:54 AM

I haven't caught anything yet. I think I may have put too much dishwashing liquid. Is that possible?

Posted by: Matt | Mar 3, 2011 10:51:59 AM

Matt, are you seeing many wasps, hornets or yellowjackets outside where you are? The dishwashing liquid is added simply to coat the wings so the insects can't fly once they land in the water/attractant mixture. Even if you add a bit more than the few drops we call for in the instructions, it should not make much difference.

Posted by: Stephanie | Mar 3, 2011 12:30:24 PM

I used a pair of scissors to cut the attractant pack (the small one that needs to be cut open) in my why trap. Some of the attractant got on my scissors and I can't get it off - I can still smell it after washing several times with soap and water. What will remove it?

Posted by: Carol | Apr 11, 2011 3:52:47 PM

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