Archive for August, 2012

OSU researchers create fragrance mosquitoes can’t resist – Columbus Dispatch


Columbus Dispatch

OSU researchers create fragrance mosquitoes can't resist
Columbus Dispatch
Those pesky mosquitoes snacking on your arms and legs aren't only out for blood. Like most other creatures, they have a favorite food. In their case, it's sweet, succulent flower nectar. Mosquitoes don't pollinate flowers as other insects do. After

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Pest detectors wanted – WCAX

Pest detectors wanted
WCAX
The state Department of Forest, Parks & Recreation runs the Forest Pest First Detector Program. Volunteers undergo online and workshop courses to help them identify invasive forest pests. It was a volunteer who detected the Hemlock Wooly Adelgid that

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Nebraska Forest Service assessing trees for pest, disease threats – Lincoln Journal Star

Nebraska Forest Service assessing trees for pest, disease threats
Lincoln Journal Star
NORTH PLATTE ? In an effort to prepare Nebraska communities for several pests and diseases that could threaten the state's trees, the Nebraska Forest Service is starting with an inventory and assessment of trees in central Nebraska. The forest service

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Millions of trees killed by exotic pests in Michigan – SooToday.com


SooToday.com

Millions of trees killed by exotic pests in Michigan
SooToday.com
The process of harvesting ash and beech from identified areas is ongoing in an attempt to recover timber value before the resources are killed by the two exotic forest pests. EAB [shown] and BBD are killing ash and beech in hardwood forests throughout
DATCP: Be Aware of EAB Treatment ScammersWisconsin Ag Connection

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Aug 14, 2012 – Earwigs Got Wings?

QUESTION:

I have an insect that I believe is a female earwig except she has long wings that extend all the way to the end of her cerci. She has the long antenna coming from just below her eyes and the cerci and the obvious segments on her ventral side. She is a classic earwig except for the long wings? Is there another insect I am overlooking for identification?


ANSWER:

Without an image to help with the ID I won’t be absolutely positive on this, but it still could be an earwig. Especially if there are earwig-like pincers at the back, which no other common insects have, this may just be an earwig with her flight wings extended. We don’t often see earwigs fly, but several species are quite capable of it and have very large hind wings for flight that they normally fold up nicely and stuff under the first pair of wings to protect them while not flying. Those forewings are simply short covers (elytra) used only as this protective cover, leaving most of the abdomen exposed on top. In your case, take a close look and see if there is that pair of short, dark elytra just in front of the large wings. 

A bit of trivia we may not remember is that much of the diet of earwigs will be other insects. While the European Earwig will also munch on plant materials much or most of its diet is other bugs, so it serves us a benefit in that regard. Some earwig species are almost 100% predatory in their food gathering, so if these creatures are staying outside in the garden where they can do some good that garden may be better off with them than without them. 

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Aug 11, 2012 – Preemptive Strike?

QUESTION:

I have a hotel that wants to be proactive with daily inspections of guest rooms for bed bugs. Do you think this is necessary?


ANSWER:

I absolutely DO think that hotels and motels had better be proactive about the bed bug problem, and have a clear and enforced policy in place. The liability and bad publicity for hotels and motels that are found to have bed bugs, particularly when guests decide their home became infested because of the place they recently stayed, is too high for hotels to ignore. They could be sued for millions of dollars and their name displayed on the local news papers if they are found to have bed bugs. Plus, this bad publicity could easily result in the loss of income when people decide not to stay there. 

The housekeeping staff should be educated / trained on exactly what to look for each time they make up a room. This would include at least a minimal inspection of the bedding, the mattress and box spring, and other obvious places in the immediate vicinity of the bed. They can look for blood spots, shed skins, and of course bugs themselves in hiding. If they find anything suspicious they can call in a professional like yourself to do a much more thorough inspection to verify or discount what they found. If bugs are found in a room the inspection needs to expand to all adjacent rooms above, below, and to the sides. Bed bugs can spread so rapidly in commercial structures that you just cannot let them get established. 
Now, by “daily” inspections are you suggesting the hotel management wants YOU to perform these inspections, and do they want you to inspect ALL rooms daily? I think that is probably more than is warranted, and you would need to charge a hefty price for all this work. Essentially that would amount to this hotel having a dedicated, full time employee doing nothing but bed bug inspections to be able to do the thorough inspection needed for each and every room. A better start may be to train the staff now so they know what to look for and be sure it is done on a regular basis. The housekeeping staff also should be trained on how to avoid taking bed bugs home themselves! This might include changing out of any clothing they wore while working in the guest rooms and wearing home clothing that was kept in sealed bags in a changing area. They may want to wear disposable shoe covers while in guest rooms. But in some way they deserve to be protected from carrying bed bugs into their own homes, and this could be part of the service you offer to this customer. 

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Aug 12, 2012 – Attractants – Not Just For Mice

QUESTION:

I am using Provoke Professional Mouse Attractant by Bell Labs, that goes on top of rodenticides, in this case Ditrac Blox. The mouse attractant is drawing pharoah ants in a trail approximately 15′ long, 1″ wide, with thousands of ants working from their home to the bait. I am getting rid of the mice but I am attracting ants. The bait is in closed bait stations and I use a pyrethrum to eliminate the ant problem. My question is why are the ants attracted to the bait? This product is being used inside a school, away from food, and it is in a area that is safe.

ANSWER:

I looked at the MSDS and Label for this attractant and they don’t divulge what the ingredients are, other than to state that the material contains no “hazardous” ingredients. So, since it is formulated to be highly attractive to mice it probably contains a nice soup of food ingredients, possibly including sweet materials as well as protein substances that give off a delightful odor………delightful to mice at least. The pharaoh ants are omnivores that also feed on a variety of sweet and protein foods, so it probably is reasonable that they would pick up the scent as well and find the attractant to be pretty darned tasty. 

I guess I would characterize this as suggesting that you are not necessarily “attracting” ants, but that these ants already were established in this structure and all you have done is brought them out into the open more with this food supply. Since this is in a school it now limits your options for eliminating the ants, but I suggest the use of some of the ant baits, placed directly in the trails that you now are seeing and within enclosed stations if possible. If the ants are disappearing into a void that you can place bait into that might also be helpful. 

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Aug 9, 2012 – A Little Dab Will Do Them……..In

QUESTION:

How many ounces or grams makes a lethal dose for rats using Talon G?

ANSWER:

When Talon (brodifacoum) first came on the market as the first single feeding anticoagulant rodenticide we were told by the manufacturer that a single pellet was sufficient to kill a house mouse and 3 pellets could kill a typical rat. Clearly this is not much bait, attesting to the higher toxicity of the active ingredient. In fact the LD-50 of pure brodifacoum to a Norway Rat is 0.27 mg/kg, compared with warfarin (58 mg/kg) or diphacinone (3.0 mg/kg). I took these numbers from a resource by Cornell University. 

Now, we never offer PURE active ingredient to rodents, but it is greatly diluted with food ingredients, paraffin, etc., so the end result according to this resource is that it takes a lot more of the bait to kill that rodent. So, here are some relative amounts for typical warfarin, diphacinone, and brodifacoum bait products to be the lethal dose for a rat, and presumably a Norway Rat since these are lab results. 
Warfarin bait of 0.025% – LD-50 is 58 grams of bait, or nearly 2 ounces.
Diphacinone bait of 0.005% – LD-50 is 11.5 grams or just over 1/3 ounce.
Brodifacoum bait of 0.005% – LD-50 is only 1.4 grams, or about 1/14 of an ounce. 
As you can see, brodifacoum takes just a very small amount to reach that lethal dose. Since this in general is based on the weight of the animal eating the toxicant a much larger animal like a dog would have to consume a correspondingly much larger amount of the bait to reach a presumed lethal dose. According to one of our industry’s top rodent control experts the likelihood of this kind of “secondary” poisoning, from a dog eating enough rats to consume the lethal dose, is highly unlikely. But, since the remote possibility still exists it is important to adhere to the label requirement on most rodent bait products that all dead or dying rodents be removed and disposed of quickly after a baiting program is begun. 

View past Ask Mr. Pest Control questions.

Pear slug easy to

Q: I have a problem with a shiny black caterpillar about 1/4 inch long having a tadpole-like shape, where the head is much larger than the other end. It is a voracious feeder and skeletonizes the leaves of both cherry and pear trees. Are you familiar with …

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Busy bees: Take precautions to avoid insect bites, stings

There are several precautions that should be taken to avoid being stung by a bee or bit by this summer. According to the Centers for Disease Control (CDC), the health effects of stinging or biting range from mild discomfort or pain to a …

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