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Sean,
I had them in a freezer at -29dF for 4 hours and some 1st instars lived. But for 5 days they also died. If CO2 used in cooler temps then it will not work as well if were at higher temps since the insects will be more active and also will respire more at higher temps. I have the DVD, he gave it to me during one of his meetings: I've known him for over 25 years. I wrote to Gary Alpert at Harvard because the image is on the front cover and the human hair angled toward the bug proboscis gives the illusion that the hair _is_ the extended proboscis. The image has been used in BB presentations and some people from various manufacturers have incorrectly noted the "extended proboscis" of the bug. Also used in the recent Armed Forces tech guide 44 (noted on this list) in the "extended proboscis" version. Anyway, Gary used Photoshop and erased the hair and now the corrected image is on the
Harvard site.
Some reference he also had to Gentrol and it killing 60% of the bed bugs which was similar in some tests to the insecticides used. He also mentioned that it did not work as a growth regulator in some cases.
Lou
nobugs <nobugsonme@...> wrote:
nobugs <nobugsonme@...> wrote:
This is an article referencing the points Sean was referring to.
I am confused. Hasn't it been shown that 40 degrees below zero (or even freezing) temps will kill bed bugs in time? Conservatively at least 2 weeks? If this is in dispute, we really need someone to test this.
kate
Roewin <monarchroewin@yahoo.ca> wrote:Hi Lou,
Here is an excerpt from his traveling seminars:
"So what does not work for bed bug control? Frishman noted the following:His DVD Innovations in Pest Control is available from Bayer where he focuses on bed bugs and bed bug treatment.
- Cold – 40 degrees below zero will not kill bed bugs
- CO2 (carbon dioxide)
- Growth regulators
- Spending 20 minutes in a room – “You need two hours to do a treatment,” he said."
As I stated I have no experience with the use of CO2, but I do know that Dr. Austin Frishman is one of the world's foremost pest control experts. He was a technician at the time that bed bugs were still a problem in the US prior to this new emergence.
His word is certainly not gospel ... but I hold it in high regard.
Perhaps there will be some new data to support the use of CO2 as a fumigant for erradicating bed bugs.
Sean.
Lou Sorkin <louento@yahoo.com> wrote:Sean,I don't think I ever heard of that. All living creatures who breathe oxygen, exhale CO2. Some creatures don't have to breathe so often as others. Also temp dependent. Maybe it has to be mixed with other gases to get them to breathe more often or make them want to breathe more often. Anoxic treatment using nitrogen, argon, CO2 takes a few weeks to work on certain objects: Also use O2 scavengers that absorb O2.
Lou
Roewin <monarchroewin@yahoo.ca> wrote:Hi Lou,
Dr. Austin Frishman claims that CO2 fumigation does not work. The bed bugs seem to be "immune" to it.
I have no CO2 experience with bed bugs myself though.
Sincerely,
Sean
Lou Sorkin <louento@yahoo.com> wrote:Actually, I'm also surprised. Possibly the heat really never got to the proper temperature which would be minimally 120d F and for 3-4 hours. I know you stated that you actually hit 150d F. Were there thermocouples burried deep in whatever was being heated to ensure that the proper temp was actually reached?CO2 probably won't work, esp. with the cooler temps outside. Warmer times and CO2 would be better. I don't really know if anyone knows how often the bugs respire in a day, hour, etc.Lou
nobugs <nobugsonme@yahoo.com> wrote:Where are you Jackson, and what company did the heat treatment? I am surprised it did not work.
Nobugs!
Jackson Rose <johnrose75@gmail.com> wrote:So I live in an apartment and all the laundromats around me have
driers that just aren't hot enough, well at least I keep getting
bitten after drying my sheets for two hours, so I'm looking for
alternatives.
Has anyone tried a microwave? I'm thinking of doing all my clothes in
batches, maybe 5 minutes at a time, that should do the trick, eh?
What about sealing them up in large plastic bags, sucking out the air,
and pumping the bags with CO2? My landlord will assist with this
process as needed, he's willing to pump up trash bags of of clothes
with CO2 several times over the period of a couple of weeks, with the
plan on suffocating the bugs. Any reason that wouldn't work?
I brought in a crew to heat my apartment up to 150 degrees twice, and
I don't beleive its worked. I woke up the night after the second
treatment with several new bites. I have no idea how the bugs could
have survived such heat for four hours (and this is with my mattresses
tee-peed and rotated every hour, and all my clothes and bedding hung
around my room....
Anyway....the battle continues....
nobugsonme@yahoo.com
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