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Bigbully
Member
United Kingdom
65 Posts |
 Posted - 19 Oct 2007 : 09:30:15
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| I guess many of us have seen Mark and Anthea use the cryonite system for bedbugs a couple of weeks ago but has anyone else out there used it? Any thoughts as to whether it can penetrate deeply enough to eliminate the need for residual pesticides? Or, if you wanted a pesticide-free treatment regime - would it be more effective when used together with Oa2Ki? Anyone fancy carrying bottles of liquid CO2 on the van? |
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Dusty
Hyperactive Member
Australia
570 Posts |
Posted - 19 Oct 2007 : 09:56:02
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Already do Bully. Only difference is that it is ultra high pressure and has Pyrethrin and Piperonly Butoxide mixed with it.
JAFA
Don't feed them, get Rid of them - visit us on www.ridpest.com.au |
Edited by - Dusty on 19 Oct 2007 09:57:02 |
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Iain
Moderator
United Kingdom
446 Posts |
Posted - 19 Oct 2007 : 10:50:40
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That would be Pestigas would it Dusty?
Seemed a good idea, but I don't think was ever marketed in the UK.
With regard to bed bugs and temperature, remember that they are very cold-hardy, so whilst I have no doubt it works close up, I have my doubts about bugs which are more than a few cms away from the nozzle.
Personally, I would go with a hot treatment using a steamer, provided it is a low pressure one that doesn't blast them all over the place. Bed bugs seem pretty susceptible to temperatures over 45 degrees C. That and a powerful vacuum cleaner.
I believe that NickA uses these techniques - any comments?
Obviously there are limits as to the surfaces/objects you can treat safely with extreme temperatures, as the treatment could cause damage. Also, neither are going to be able to touch bugs deep in a void. That's where your diatomaceous earth comes in handy.
Obviously, temperature treatments tend to be labour-intensive, so will tend to be expensive for the client.
Does anyone use synergised pyrethrins as a surface treatment for such insects? Aquapy mentions bed bugs on the label.
This would be a step down the organic route and although you wouldn't get long-term residuality, you may get a better effect against pyrethroid-resistant bugs in the same way that pyrethroid-resistant houseflies can be treated effectively with natural pyrethrins. |
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Bigbully
Member
United Kingdom
65 Posts |
Posted - 19 Oct 2007 : 11:32:09
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Cheers Iain and Dusty.
As a matter of fact I was using Pestigas in the mid to late 80's in the UK. Not sure that it was ever any good though but I was young and green in those days! We had all sorts of fun products around then - anyone remember Blattanex?
We're currently using Empire 20 as weapon of choice against bedbugs although there are only a few months left and not much in the way of available stock now anyway (not sure about the Certis product). This has been producing excellent results against previously used products. I am wondering if the micro-encapsulation of the ai has any significant effect and whether using something like Demand would be more productive than something similar applied as an emulsion or sc. Anyone using Demand against bedbugs - any comments? |
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The Spotlight Kid
Senior Member
360 Posts |
Posted - 19 Oct 2007 : 21:40:55
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On the effects of adverse temps. on bed bugs Iain's figures are spot on but the duration required is going to be hard to achieve; ie
Heat:
Eggs killed at 45 degC. for 1 hour or 41 deg C. for 24 hours.
Fatal temperatures for adults is 1 deg lower in each case. (now that's a lot of steam)
Prolonged moderately high temps. eg. 34 degs C. produces cumulative fatality which can eventually cause colony decline.
Cold:
Eggs: 30 to 60 days at un-heated room temps. (0-9 degs C.) causes death of eggs and first and second instars in 100-200 days.
2 hours exposure to -15 deg C kills 76% of eggs.
Adults: killed 2 hours exposure at -17 deg C (1 hour kills only 25%)or 1 hour at -18 deg C. Recently fed bugs are more susceptible than partially starved ones.
Is anyone still awake ?
Sorry for all the techy stuff but my point is that applying those temperatures for those durations is a pretty tall order.
It's Empire 20 for me and god help us when it's gone! |
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Dusty
Hyperactive Member
Australia
570 Posts |
Posted - 20 Oct 2007 : 00:00:23
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You got it in one Iain.
Pestigas is not something I would bother attempting to use against bed bugs. The intense cold from the CO2 dissipates very quickly and I believe the duration would need to be much, much longer.
Bully, Pestigas (although expensive) works exceptionally well against German roaches,fleas and some species of ants. Have also used against Harvesters ( aka. Daddy long legs) in homes with vaulted or cathedral ceilings.
I also use it destroy bee hives that are well established and unaccessible in wall cavities.
Its big benefit is that it is almost an instant kill.
I believe until a magic cure comes along, bed bug treatments will need to be multi-faceted, and damned hard work. The Yanks look upon us all with green envy while we use Ficam. Insecticidal dusts are important as is such processes as steam. Vacuuming is probably also a must although I am not aware of a bagless vacuum cleaner specifically intended for pest control ( I get very nervous about transference of BB eggs with conventional bag collection vacs.)Imagine the cost of a Dyson made for pest controllers?
JAFA
Don't feed them, get Rid of them - visit us on www.ridpest.com.au |
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blatta
Senior Member
United Kingdom
203 Posts |
Posted - 20 Oct 2007 : 09:33:21
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Spot
There is an effect caused by rapid changes in temperature and I believe that this is what the Cryonite (and steam) systems rely on to get a good kill rate.
Having said that, we do not use either of these methods and do not intend to for the foreseeable future.
Thorough treatments with a residual insecticide that works and your problems are sorted. We are currently using Empire 20 on all our bed bug jobs. Rotation of insecticides is not an issue any more, if they become resistant to OP's by next August, what does it matter
www.checkservices.co.uk |
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The Spotlight Kid
Senior Member
360 Posts |
Posted - 20 Oct 2007 : 13:43:02
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| Good point Blatta, sad but true! |
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Cryonite for Bedbugs?
