Bed bugs survive freezing temperatures
better than humans
bed bug-infested clothing or other small items to freezing temperatures
may be a viable control option for people at risk of bed bug
infestations. However, a new study has found that bed bugs may be less
susceptible to freezing temperatures than previously reported.
article in the Journal of Economic Entomology called "Cold
Tolerance of Bed Bugs and Practical Recommendations for Control," the
authors describe how bed bugs, like many other
insects, use a "freeze-intolerant" strategy against the cold, meaning
they attempt to protect themselves from freeze injury by lowering the
freezing point of their body fluids.
authors found that in order to achieve 100% mortality, a minimum
exposure time of 80 hours at minus 16 degrees Celsius is required
for all life stages. Temperatures below minus 15 degrees Celsius are
sufficient to control all life stages of bed bugs after 3.5 days, while
temperatures below minus 20 degrees Celsius require only 48 hours. They
also observed bed bug eggs surviving in short-term exposures to
temperatures as low as minus 25 degrees Celsius.
can place bed bug-infested items in a freezer to destroy them. However,
the authors recommend that the items be placed in plastic bags and that
they remain in the freezer for 2-4 days, depending on the freezer's
spices from India, Mexico found contaminated with Salmonella, excreta
In a glaring exposure, the
US Food and Drug Administration has found
contamination in a whopping 12 percent of
spices imported to the United States.
Canada registered the lowest
salmonella presence at less than 1
percent of its 110 shipments.
The report released by FDA said that
about 12 percent of spices brought to the
United States are contaminated with insect
fragments, whole insects, and rodent hairs.
Moreover, nearly 7 percent of spice imports
examined by federal inspectors were also
found contaminated with salmonella, a toxic
bacteria that can cause severe illness in
to the report, the spices coming from Mexico
and India were found to have the highest
rate of adulteration. FDA says, almost 9
percent of 1,057 spice shipments from India
were contaminated with salmonella compared
with 14 percent of 136 shipments from
Most DIY methods of getting
rid of Bed Bugs don’t work
As bedbugs become more resistant to
various pesticides, other defenses are growing in importance. But new
tests give low grades to several homespun methods of bedbug defense.
Rubbing alcohol is often recommended for killing bedbugs, for example.
But spraying a group of the insects with it left about half alive four
days later, Changlu Wang reported at this month’s Entomology 2013
conference. His research team at Rutgers University also found that
mothballs failed to wipe out bedbugs after seven days in a plastic bag
full of infested clothes. Eggs and immature bedbugs survived the
mothball treatment well, and only 44 to 60 percent of the adult males
In spite of these and other
underwhelming test results, Wang encourages no-pesticide, DIY tactics.
Ultrasonic bedbug-repelling devices are popular, but they don’t work,
Wang said. In a survey of 23 places infested with bedbugs, five had an
ultrasonic repeller. Based on his research, Wang does support some tools
and stratagems for a home campaign against bedbugs. He recommended using
bug-blocking mattress casings, washing clothes in hot water and drying
them at high temperatures, and, if people have access to the equipment,
steaming mattresses and other surfaces.
hornets attack citizens in China
According to a Guardian report, dozens of people in recent
weeks in China have died of hornet attacks. Over
100 individuals in the Angkang city area of Shaanxi province were
attacked by these deadly flying insects and no one knows why.
Hornet attacks are nothing new in China; in fact, several people
die by hornet attacks each year. However, this time around attacks are
more frequent, which push the death toll to its highest point yet.
Health officials claim around 18 persons have died so far, but local
newspapers believe 21 have died in hospitals.
Pesticides are regulated by Health Canada under
Did you know it's against the law...
- to use pesticides to control any pest
that is not listed
on the label.
- to use pesticides
in a manner that is not in compliance
with directions on the label.
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This is one
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"What is this
This bug was found in Rosedale, Chilliwack, BC. Angela..
is a giant water bug (Hemiptera: Belostomatidae), a.k.a. toe biter or
electric light bug. They are voracious predators on aquatic invertebrates as
well as the occasional tadpole or small fish, and can deliver quite a
painful ‘bite’ if mishandled. See nos. 1498, 1457, and 1378 for other
examples. Ed Saugstad, retired
entomologist; Sinks Grove, WV.
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