I was sweeping the cinder block foundation of dust & spider webs preparing it for painting with Drylock when I noticed wasps going up under the siding. A neighbor destroyed a mud nest hanging on her porch. Putting a mirror under the siding did not reveal the nest. I sprayed with Raid Wasp & Hornet but I am unable to reach the nest. Please advise.
I don’t think the wasp and hornet spray you’ve applied will help. Here’s why.
You see, these products are designed for a quick kill in open areas and don’t offer any kind of residual action. So unless you were able to coat every member of the colony with the spray, its highly likely the nest will continue to prosper and be active. So if you see them active 1-2 days after you sprayed, it will be clear the treatment didn’t work.
And if it didn’t work, you’ll need to do one of the following treatments.
The first would be to apply DRIONE DUST listed in our WASP CONTROL article. Drione is quite “smokey” and when applied into any kind of small entrance way it will easily permeate up and into all parts of the nest assuring a quick and complete kill. So if I was to treat your home as a pest control professional, its most likely the product I’d use.
To see how well it works, check out the following video. This video shows what Drione will do to a yellow jacket nest. Granted the treatment in this video was done to a nest located in the ground but regardless of where the nest is located, Drione will work the same way.
Now the only potential problem of using Drione is that if you don’t get the entire nest, you could force the wasps to find another route of entry in and out of your home.
And when this happens, there is always a chance they will find a route which leads to inside living areas. For obvious reasons, this would be bad. So if you’re uncomfortable doing the treatment because of this risk, there is a second option that will work. It just takes a bit longer but it will do the job.
So this second option would involve the use of PHANTOM AEROSOL. This product is slow to work and doesn’t kill or repel insects like Drione or Wasp Freeze.
So if you were to mist the nest entry way every evening just after dark for say 5-10 seconds and then let the nest sit overnight, you should be able to kill any wasp entering the area. As stated the Phantom won’t kill them on contact. But after 2-4 days of them touching the treated surfaces and then “sharing” the treatment with other members of the colony, the Phantom will “translocate” to other members. And as it moves throughout the nest it will eventually effect all of them leading to the nest dying.
Phantom comes with a straw injector and I recommend you use this to direct the spray up and into the nest hole. Again, you’ll want to do this in the evening when they’re all back inside and resting and you’ll want to get 5-10 seconds of spray applied every evening until all activity ceases. Based on previous results I’ve seen afield, it usually takes 3-5 days for the nest to become inactive. At that point you can cease treating.
Oh, and if you sneak in quietly and spray for 5-10 seconds and then leave quickly, there will be little or no risk of you being stung since you won’t be hanging around after you spray.
Here are direct links to the information and products listed above:
Phantom Aerosol: http://www.bugspraycart.com/insecticide/aerosol/pt-phantom-17-5oz
Wasp Control: http://www.wasps.net/wasp-and-hornet-control
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